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[SOURCE: https://en.wikipedia.org/wiki/Fifth_generation_of_video_game_consoles] | [TOKENS: 3519] |
Contents Fifth generation of video game consoles The fifth generation era (also known as the 32-bit era, the 64-bit era, or the 3D era) refers to computer and video games, video game consoles, and handheld gaming consoles dating from approximately October 4, 1993, to March 23, 2006.[note 1] The best-selling home console was the Sony PlayStation, followed by the Nintendo 64 and the Sega Saturn. The PlayStation also had a redesigned version, the PSone, which was launched on July 7, 2000. Some features that distinguished fifth generation consoles from previous fourth generation consoles include: This era is known for its pivotal role in the video game industry's leap from 2D to 3D computer graphics, as well as the shift in home console games from being stored on ROM cartridges to optical discs. This was also the first generation to feature internet connectivity: some systems had additional hardware which provided connectivity to an existing device, like the Sega Net Link for the Sega Saturn. The Apple Pippin, a commercial flop, was the first system to feature on-board internet capabilities. For handhelds, this era was characterized by significant fragmentation, because the first handheld of the generation, the Sega Nomad, had a lifespan of just two years, and the Nintendo Virtual Boy had a lifespan of less than one. Both of them were discontinued before the other handhelds made their debut. The Neo Geo Pocket was released on October 28, 1998, but was dropped by SNK in favor of the fully backward compatible Neo Geo Pocket Color just a year later. Nintendo's Game Boy Color (1998) was the most successful handheld by a large margin. There were also two minor updates of the original Game Boy: the Game Boy Light (released in Japan only) and the Game Boy Pocket. There was considerable time overlap between this generation and the next, the sixth generation of consoles, which began with the launch of the Dreamcast in Japan on November 27, 1998. The fifth generation ended with the discontinuation of the PlayStation (specifically its re-engineered form, the "PSOne") on March 23, 2006, a year after the launch of the seventh generation. History The 32-bit/64-bit era is most noted for the rise of fully 3D polygon games. While there were games prior that had used three-dimensional polygon environments, such as Virtua Racing and Virtua Fighter in the arcades and Star Fox on the Super NES, it was in this era that many game designers began to move traditionally 2D and pseudo-3D genres into 3D on video game consoles. Early efforts from then-industry leaders Sega and Nintendo saw the introduction of the 32X and Super FX, which provided rudimentary 3D capabilities to the 16-bit Genesis and Super NES. Starting in 1996, 3D video games began to take off with releases such as Virtua Fighter 2 on the Saturn, Tomb Raider on the PlayStation and Saturn, Tekken 2 and Crash Bandicoot on the PlayStation, and Super Mario 64 on the Nintendo 64. Their 3D environments were widely marketed and they steered the industry's focus away from side-scrolling and rail-style titles, as well as opening doors to more complex games and genres. 3D became the main focus in this era as well as a slow decline of cartridges in favor of CDs, due to the ability to produce games less expensively and the media's high storage capabilities. After allowing Sony to develop a CD-based prototype console for them and a similar failed partnership with Philips, Nintendo decided to make the Nintendo 64 a cartridge-based system like its predecessors. Publicly, Nintendo defended this decision on the grounds that it would give games shorter load times than a compact disc (and would decrease piracy due to a certain chip in the ROM cartridge). However, it also had the dubious benefit of allowing Nintendo to charge higher licensing fees, as cartridge production was considerably more expensive than CD production. Many third-party developers like EA Sports viewed this as an underhanded attempt to raise more money for Nintendo and many of them became more reluctant to release games on the N64.[citation needed] Nintendo's decision to use a cartridge based system sparked a debate in the video game magazines as to which was better. The chief advantages of the CD-ROM format were (1) larger storage capacity, allowing for a much greater amount of game content; (2) considerably lower manufacturing costs, making them much less risky for game publishers; (3) lower retail prices due to the reduced need to compensate for manufacturing costs; and (4) shorter production times, which greatly reduced the need for publishers to predict the demand for a game. Its disadvantages compared to cartridge were (1) considerable load times; (2) their inability to load data "on the fly", making them reliant on the console RAM; and (3) the greater manufacturing costs of CD-ROM drives compared to cartridge slots, resulting in generally higher retail prices for CD-based consoles. A Nintendo Power ad placed a Space Shuttle (representing cartridges) next to a snail (representing a CD), as an analogy for their respective speeds, stating that "the future doesn't belong to snails". Almost every other contemporary system used the new CD-ROM technology. Consequent to the storage and cost advantages of the CD-ROM format, many game developers shifted their support away from the Nintendo 64 to the PlayStation. One of the most influential game franchises to change consoles during this era was the Final Fantasy series, beginning with Final Fantasy VII, which was developed for the PlayStation instead of the N64 due to storage capacity issues; prior Final Fantasy games had all been published on Nintendo consoles – either the NES or Super NES, with the only other entries being on the Wonderswan, or computers like the MSX. The fifth generation was characterized by an unusually high number of console formats. More competing consoles comprised this generation than any other since the video game crash of 1983, leading video game magazines of the time to frequently predict a second crash. The 3DO Interactive Multiplayer was one of the earliest fifth generation consoles and was released in October 1993. Despite having massive[citation needed] third-party support and an unprecedented amount of hype for a first-time entrant into the industry, it had early difficulties due to software development delays and its high price. For its initial release, the 3DO had a $700 retail price tag and only a single available game ready for market. The 3DO would be discontinued only three years later. While generally regarded as a failed system, the 3DO was this generation's fourth best-selling console in a crowded field with sales of 2 million units. The Sega Saturn was Sega's entry into the stand-alone 32-bit console market. It was released in Japan simultaneously with the 32X in November 1994, although it would not have a North American release until six months later. It became Sega's most successful console in Japan. In America and Europe however, a disastrous launch and an MSRP of $399 compared to the PlayStation's $299 caused it to be a commercial failure, selling far fewer units than the Master System and Mega Drive/Genesis before it. The PlayStation, released in early December 1994, was the most successful console of this generation. With attention given by third-party developers and a more mature marketing campaign aimed at the 20–30 age group enabling it to achieve market dominance, it became the first home console to ship 100 million units worldwide.[citation needed] The Nintendo 64, originally announced as the "Ultra 64", was released in 1996. The system's delays and use of the expensive cartridge format made it an unpopular platform among third-party developers.[citation needed] Several popular first-party titles allowed the Nintendo 64 to maintain strong sales in the United States, but it remained a distant second to the PlayStation.[citation needed] The Amiga CD32 was released in September 1993 and sold in Europe, Australia, Canada and Brazil. It was never released in the United States due to Commodore's bankruptcy and court-ordered import restrictions. Despite promising initial sales, the console was hampered by poor software quality with many titles being simply re-releases of older games. Production of the Amiga CD32 was discontinued after only eight months. The Atari Jaguar was released in November 1993 and was marketed as the world's first 64-bit system. However, sales at launch were well below the incumbent fourth generation consoles, and a small games library rooted in a shortage of third-party support made it impossible for the Jaguar to catch up, selling below 250,000 units. The system's 64-bit nature was also questioned by many. Its only add-on, the Jaguar CD, was released in 1995 and was produced in limited quantities due to the low install base of the system.[citation needed] The 32-bit Atari Panther, set to be released in 1991, was canceled due to unexpectedly rapid progress in developing the Jaguar. The Sega 32X, an add-on console produced by Sega for the Genesis, was launched in November 1994. The Sega Neptune, a standalone version of the 32X, was announced but ultimately canceled. Sega failed to deliver a steady flow of games for the 32X platform. With customers anticipating the PlayStation on the horizon, and with Sega's more technically advanced Saturn already competing on the market in Japan, sales of the 32X were poor. NEC, creator of the TurboGrafx-16 of the previous generation, entered the market with the PC-FX in late December 1994. The system had a 32-bit processor, 16-bit stereo sound, and video capability. Despite its impressive specifications, it did not have a polygon processor and was marketed as a platform for 2D and full motion video games. The PC-FX game library was criticized for being low in quality, and having titles that relied more on animation than gameplay. Due to low expected sales, it was never released outside of Japan. In 1995, Nintendo released the Virtual Boy, a supposedly portable system capable of displaying true 3D graphics, albeit in monochromatic red and black. Despite being marketed as a portable system, it is not actually portable in practice due to the lack of a head strap. Also, because of the nature of its display, the system reportedly caused headaches and eye strain. It was discontinued within a year, with fewer than 25 games being released for it. Although it sold over 750,000 units, Nintendo felt that it was a failure compared to consoles such as the Super Nintendo, which sold over 20 million. By the end of the 1995 Christmas shopping season, the fifth generation had come down to a struggle between the Sony PlayStation, Sega Saturn, 3DO Interactive Multiplayer, and the upcoming Nintendo 64. The Amiga CD32 had already been discontinued; the Jaguar, Genesis 32X, and Virtual Boy were still on the market but were considered a lost cause by industry analysts; the Neo Geo CD had proven to appeal only to a niche market; and industry analysts had already determined that the yet-to-launch Apple Bandai Pippin was too expensive to make any impact in the market. Moreover, even the leading fifth generation consoles were still facing sluggish sales. Combined sales for the PlayStation, Saturn, and 3DO barely topped 1 million units for the Christmas shopping season, as compared to combined sales of 4 million for the Sega Genesis and Super NES. Focus groups showed that most children under 12 years old were equally happy playing on fourth generation consoles as they were playing on fifth generation consoles, making the fourth generation consoles more appealing to adults buying gifts for children, since they were cheaper. Industry analysts began putting forth the possibility that the fifth generation of consoles would never overtake the fourth generation in sales, and become superseded by a new generation of DVD player consoles before they could achieve mass acceptance. 1996 saw the fifth generation consoles' fortunes finally turn around. With the Saturn, PlayStation, and Nintendo 64 all showing dramatic increases in sales over the previous year, they claimed a combined 40% of the retail market for hardware and software, putting them in position to finally overtake the fourth generation consoles in 1997. The Sega Saturn suffered from poor marketing and comparatively limited third-party support outside Japan. Sega's decision to use dual processors was roundly criticized, as this made it difficult to efficiently develop for the console. Sega was also hurt by the Saturn's surprise four-month-early U.S. launch; third-party developers, who had been planning for the originally scheduled launch, could not provide launch titles and were angered by the move. Retailers were caught unprepared, resulting in distribution problems; some retailers, such as the now defunct KB Toys, were so furious that they refused to stock the Saturn thereafter. Due to numerous delays, the Nintendo 64 was released one year later than its competitors. By the time it was finally launched in 1996, the PlayStation had already established its dominance, the Saturn was starting to struggle, and the 3DO and Jaguar had been discontinued.[citation needed] Its use of cartridge media rather than compact discs alienated some developers and publishers due to the space limits, the relatively high cost involved, and a considerably longer production time.[citation needed] In addition, the initially high suggested retail price of the console may have driven potential customers away, and some early adopters of the system who had paid the initial price may have been angered by Nintendo's decision to cut the price of the system by $50 six months after its release. However, the Nintendo 64 turned out to be a commercial success, particularly in the United States, where it sold 20.63 million units, nearly two thirds of its worldwide sales of 32.93 million units. It was also home to highly successful games such as Star Fox 64, Mario Kart 64, The Legend of Zelda: Ocarina of Time, The Legend of Zelda: Majora's Mask, Super Mario 64, GoldenEye 007, Banjo-Kazooie, and Super Smash Bros. While Nintendo 64 sold far more units than the Sega Saturn, Atari Jaguar, and 3DO combined, it posed no challenge to the PlayStation's lead in the market. By 1997, 40% to 60% of American homes played on video game consoles.[further explanation needed] 30% to 40% of these homes owned a console, while an additional 10% to 20% rented or shared a console. After the fifth generation console wars came to a stop, several companies saw their outlooks change drastically. Atari Corporation, which was not able to recover its losses, ended up merging into JTS Corporation in 1996. This caused the Atari name to virtually disappear from the gaming market until 1998, when Hasbro Interactive purchased the Atari assets from JTS for $5 million. On May 14, 1999, Hasbro Interactive announced that all rights to the Atari Jaguar were released into the public domain, thus declaring the platform open; this allowed anyone to freely create and publish games for the Jaguar without endorsement or licensing from Hasbro Interactive. Since then, homebrew developers began to release uncompleted Jaguar games as well as several brand new titles to satisfy the system's cult following. Sega's loss of consumer confidence (coupled with its previous console failures), along with their financial difficulties, set the company up for a similar fate in the next round of console wars. Home systems Bottom: GoldStar GDO-101M Bottom: Japanese Saturn Model 1 and updated controller Bottom: Revised PSOne with DualShock controller Bottom: Nintendo 64 with 64DD peripheral attached These consoles are either less notable, never saw a worldwide release, and/or sold particularly poorly, and are therefore listed as 'Other'. Bottom: Atari Jaguar CD connected to the console and ProController Sega CD Add-on: Sega CD Add-on: Sega CD Add-on: Sega CD Add-on: From 1996 to 1999 (when the PlayStation, N64 and Saturn were the major 5th-generation consoles still on the market) Sony managed a 47% market share of the worldwide market, followed by Nintendo with 28% (with a percentage of that figure from the 16‑bit Super NES), while Sega was third with 23% (with a percentage of that from the Dreamcast). Production of the Sega Saturn was discontinued in 1998. Its demise was accelerated by rumors that work on its successor was underway; these rumors hurt the systems' sales in the west as early as 1997.[citation needed] The N64 was succeeded by the GameCube in 2001, but continued its production until 2004; however, PlayStation production was not ceased as it was redesigned as the PSone, further extending the life of the console around the release of the follow-up PlayStation 2. The PlayStation console production was discontinued in 2006, the same year that the PlayStation 3 was released in Japan and North America. Handheld systems Milestone titles See also Notes References |
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[SOURCE: https://en.wikipedia.org/wiki/Sociology] | [TOKENS: 15403] |
Contents Sociology 1800s: Martineau · Tocqueville · Marx · Spencer · Le Bon · Ward · Pareto · Tönnies · Veblen · Simmel · Durkheim · Addams · Mead · Weber · Du Bois · Mannheim · Elias Sociology is the scientific study of human society that focuses on society, human social behavior, patterns of social relationships, social interaction, and aspects of culture associated with everyday life. The term sociology was coined in the late 18th century to describe the scientific study of society. Regarded as a part of both the social sciences and humanities, sociology uses various methods of empirical investigation and critical analysis: 3–5 to develop a body of knowledge about social order and social change.: 32–40 Sociological subject matter ranges from micro-level analyses of individual interaction and agency to macro-level analyses of social systems and social structure. Applied sociological research may be applied directly to social policy and welfare, whereas theoretical approaches may focus on the understanding of social processes and phenomenological method. Traditional focuses of sociology include social stratification, social class, social mobility, religion, secularization, law, sexuality, gender, and deviance. Recent studies have added socio-technical aspects of the digital divide as a new focus. Digital sociology examines the impact of digital technologies on social behavior and institutions, encompassing professional, analytical, critical, and public dimensions. The internet has reshaped social networks and power relations, illustrating the growing importance of digital sociology. As all spheres of human activity are affected by the interplay between social structure and individual agency, sociology has gradually expanded its focus to other subjects and institutions, such as health and the institution of medicine; economy; military; punishment and systems of control; the Internet; sociology of education; social capital; and the role of social activity in the development of scientific knowledge. The range of social scientific methods has also expanded, as social researchers draw upon a variety of qualitative and quantitative techniques. The linguistic and cultural turns of the mid-20th century, especially, have led to increasingly interpretative, hermeneutic, and philosophical approaches towards the analysis of society. Conversely, the turn of the 21st century has seen the rise of new analytically, mathematically, and computationally rigorous techniques, such as agent-based modelling and social network analysis. Social research has influence throughout various industries and sectors of life, such as among politicians, policy makers, and legislators; educators; planners; administrators; developers; business magnates and managers; social workers; non-governmental organizations; and non-profit organizations, as well as individuals interested in resolving social issues in general. History Sociological reasoning predates the foundation of the discipline itself. Social analysis has origins in the common stock of universal, global knowledge and philosophy, having been carried out as far back as the time of old comic poetry which features social and political criticism, and ancient Greek philosophers Socrates, Plato, and Aristotle. For instance, the origin of the survey can be traced back to at least the Domesday Book in 1086, while ancient philosophers such as Confucius wrote about the importance of social roles. Medieval Arabic writings encompass a rich tradition that unveils early insights into the field of sociology. Some sources consider Ibn Khaldun, a 14th-century Muslim scholar from Tunisia,[note 1] to have been the father of sociology, although there is no reference to his work in the writings of European contributors to modern sociology. Khaldun's Muqaddimah was considered to be amongst the first works to advance social-scientific reasoning on social cohesion and social conflict. The word sociology derives part of its name from the Latin word socius ('companion' or 'fellowship'). The suffix -logy ('the study of') comes from that of the Greek -λογία, derived from λόγος (lógos, 'word' or 'knowledge').[citation needed] The term sociology was first coined in 1780 by the French essayist Emmanuel-Joseph Sieyès in an unpublished manuscript.[note 2] Sociology was later defined independently by French philosopher of science Auguste Comte (1798–1857) in 1838 as a new way of looking at society.: 10 Comte had earlier used the term social physics, but it had been subsequently appropriated by others, most notably the Belgian statistician Adolphe Quetelet. Comte endeavored to unify history, psychology, and economics through the scientific understanding of social life. Writing shortly after the malaise of the French Revolution, he proposed that social ills could be remedied through sociological positivism, an epistemological approach outlined in the Course in Positive Philosophy (1830–1842), later included in A General View of Positivism (1848). Comte believed a positivist stage would mark the final era in the progression of human understanding, after conjectural theological and metaphysical phases. In observing the circular dependence of theory and observation in science, and having classified the sciences, Comte may be regarded as the first philosopher of science in the modern sense of the term. Comte gave a powerful impetus to the development of sociology, an impetus that bore fruit in the later decades of the nineteenth century. To say this is certainly not to claim that French sociologists such as Durkheim were devoted disciples of the high priest of positivism. But by insisting on the irreducibility of each of his basic sciences to the particular science of sciences which it presupposed in the hierarchy and by emphasizing the nature of sociology as the scientific study of social phenomena Comte put sociology on the map. To be sure, [its] beginnings can be traced back well beyond Montesquieu, for example, and to Condorcet, not to speak of Saint-Simon, Comte's immediate predecessor. But Comte's clear recognition of sociology as a particular science, with a character of its own, justified Durkheim in regarding him as the father or founder of this science, even though Durkheim did not accept the idea of the three states and criticized Comte's approach to sociology. — Frederick Copleston, A History of Philosophy: IX Modern Philosophy (1974), p. 118 Both Comte and Karl Marx set out to develop scientifically justified systems in the wake of European industrialization and secularization, informed by various key movements in the philosophies of history and science. Marx rejected Comtean positivism but in attempting to develop a "science of society" nevertheless came to be recognized as a founder of sociology as the word gained wider meaning. For Isaiah Berlin, even though Marx did not consider himself to be a sociologist, he may be regarded as the "true father" of modern sociology, "in so far as anyone can claim the title.": 130 To have given clear and unified answers in familiar empirical terms to those theoretical questions which most occupied men's minds at the time, and to have deduced from them clear practical directives without creating obviously artificial links between the two, was the principal achievement of Marx's theory. The sociological treatment of historical and moral problems, which Comte and after him, Spencer and Taine, had discussed and mapped, became a precise and concrete study only when the attack of militant Marxism made its conclusions a burning issue, and so made the search for evidence more zealous and the attention to method more intense.: 13–14 Herbert Spencer was one of the most popular and influential 19th-century sociologists. It is estimated that he sold one million books in his lifetime, far more than any other sociologist at the time. So strong was his influence that many other 19th-century thinkers, including Émile Durkheim, defined their ideas in relation to his. Durkheim's Division of Labour in Society is to a large extent an extended debate with Spencer from whose sociology Durkheim borrowed extensively. Also a notable biologist, Spencer coined the term survival of the fittest. While Marxian ideas defined one strand of sociology, Spencer was a critic of socialism, as well as a strong advocate for a laissez-faire style of government. His ideas were closely observed by conservative political circles, especially in the United States and England. The first formal Department of Sociology in the world was established in 1892 by Albion Small—from the invitation of William Rainey Harper—at the University of Chicago. The American Journal of Sociology was founded shortly thereafter in 1895 by Small as well. The institutionalization of sociology as an academic discipline, however, was chiefly led by Émile Durkheim, who developed positivism as a foundation for practical social research. While Durkheim rejected much of the detail of Comte's philosophy, he retained and refined its method, maintaining that the social sciences are a logical continuation of the natural ones into the realm of human activity, and insisting that they may retain the same objectivity, rationalism, and approach to causality. Durkheim set up the first European department of sociology at the University of Bordeaux in 1895, publishing his Rules of the Sociological Method (1895). For Durkheim, sociology could be described as the "science of institutions, their genesis and their functioning." Durkheim's monograph Suicide (1897) is considered a seminal work in statistical analysis by contemporary sociologists. Suicide is a case study of variations in suicide rates among Catholic and Protestant populations, and served to distinguish sociological analysis from psychology or philosophy. It also marked a major contribution to the theoretical concept of structural functionalism. By carefully examining suicide statistics in different police districts, he attempted to demonstrate that Catholic communities have a lower suicide rate than that of Protestants, something he attributed to social (as opposed to individual or psychological) causes. He developed the notion of objective social facts to delineate a unique empirical object for the science of sociology to study. Through such studies he posited that sociology would be able to determine whether any given society is healthy or pathological, and seek social reform to negate organic breakdown, or "social anomie". Sociology quickly evolved as an academic response to the perceived challenges of modernity, such as industrialization, urbanization, secularization, and the process of rationalization. The field predominated in continental Europe, with British anthropology and statistics generally following on a separate trajectory. By the turn of the 20th century, however, many theorists were active in the English-speaking world. Few early sociologists were confined strictly to the subject, interacting also with economics, jurisprudence, psychology and philosophy, with theories being appropriated in a variety of different fields. Since its inception, sociological epistemology, methods, and frames of inquiry, have significantly expanded and diverged. Durkheim, Marx, and the German theorist Max Weber are typically cited as the three principal architects of sociology. Herbert Spencer, William Graham Sumner, Lester F. Ward, W. E. B. Du Bois, Vilfredo Pareto, Alexis de Tocqueville, Werner Sombart, Thorstein Veblen, Ferdinand Tönnies, Georg Simmel, Jane Addams and Karl Mannheim are often included on academic curricula as founding theorists. Curricula also may include Charlotte Perkins Gilman, Marianne Weber, Harriet Martineau, and Friedrich Engels as founders of the feminist tradition in sociology. Each key figure is associated with a particular theoretical perspective and orientation. Marx and Engels associated the emergence of modern society above all with the development of capitalism; for Durkheim it was connected in particular with industrialization and the new social division of labor which this brought about; for Weber it had to do with the emergence of a distinctive way of thinking, the rational calculation which he associated with the Protestant Ethic (more or less what Marx and Engels speak of in terms of those 'icy waves of egotistical calculation'). Together the works of these great classical sociologists suggest what Giddens has recently described as 'a multidimensional view of institutions of modernity' and which emphasises not only capitalism and industrialism as key institutions of modernity, but also 'surveillance' (meaning 'control of information and social supervision') and 'military power' (control of the means of violence in the context of the industrialisation of war). — John Harriss, The Second Great Transformation? Capitalism at the End of the Twentieth Century (1992) The first college course entitled "Sociology" was taught in the United States at Yale in 1875 by William Graham Sumner. In 1883, Lester F. Ward, who later became the first president of the American Sociological Association (ASA), published Dynamic Sociology—Or Applied social science as based upon statical sociology and the less complex sciences, attacking the laissez-faire sociology of Herbert Spencer and Sumner. Ward's 1,200-page book was used as core material in many early American sociology courses. In 1890, the oldest continuing American course in the modern tradition began at the University of Kansas, lectured by Frank W. Blackmar. The Department of Sociology at the University of Chicago was established in 1892 by Albion Small, who also published the first sociology textbook: An introduction to the study of society. George Herbert Mead and Charles Cooley, who had met at the University of Michigan in 1891 (along with John Dewey), moved to Chicago in 1894. Their influence gave rise to social psychology and the symbolic interactionism of the modern Chicago School. The American Journal of Sociology was founded in 1895, followed by the ASA in 1905. The sociological canon of classics with Durkheim and Max Weber at the top owes its existence in part to Talcott Parsons, who is largely credited with introducing both to American audiences. Parsons consolidated the sociological tradition and set the agenda for American sociology at the point of its fastest disciplinary growth. Sociology in the United States was less historically influenced by Marxism than its European counterpart, and to this day broadly remains more statistical in its approach. The first sociology department established in the United Kingdom was at the London School of Economics and Political Science (home of the British Journal of Sociology) in 1904. Leonard Trelawny Hobhouse and Edvard Westermarck became the lecturers in the discipline at the University of London in 1907. Harriet Martineau, an English translator of Comte, has been cited as the first female sociologist. In 1909, the German Sociological Association was founded by Ferdinand Tönnies, Max Weber, and Georg Simmel, among others. Weber established the first department in Germany at LMU Munich in 1919, having presented an influential new antipositivist sociology. In 1920, Florian Znaniecki set up the first department in Poland. The Institute for Social Research at the University of Frankfurt (later to become the Frankfurt School of critical theory) was founded in 1923. International co-operation in sociology began in 1893, when René Worms founded the Institut International de Sociologie, an institution later eclipsed by the much larger International Sociological Association (ISA), founded in 1949. Theoretical traditions The overarching methodological principle of positivism is to conduct sociology in broadly the same manner as natural science. An emphasis on empiricism and the scientific method is sought to provide a tested foundation for sociological research based on the assumption that the only authentic knowledge is scientific knowledge, and that such knowledge can only arrive by positive affirmation through scientific methodology.[citation needed] Our main goal is to extend scientific rationalism to human conduct.... What has been called our positivism is but a consequence of this rationalism. — Émile Durkheim, The Rules of Sociological Method (1895) The term has long since ceased to carry this meaning; there are no fewer than twelve distinct epistemologies that are referred to as positivism. Many of these approaches do not self-identify as "positivist", some because they themselves arose in opposition to older forms of positivism, and some because the label has over time become a pejorative term by being mistakenly linked with a theoretical empiricism. The extent of antipositivist criticism has also diverged, with many rejecting the scientific method and others only seeking to amend it to reflect 20th-century developments in the philosophy of science. However, positivism (broadly understood as a scientific approach to the study of society) remains dominant in contemporary sociology, especially in the United States. Loïc Wacquant distinguishes three major strains of positivism: Durkheimian, Logical, and Instrumental. None of these are the same as that set forth by Comte, who was unique in advocating such a rigid (and perhaps optimistic) version.: 94–8, 100–4 While Émile Durkheim rejected much of the detail of Comte's philosophy, he retained and refined its method. Durkheim maintained that the social sciences are a logical continuation of the natural ones into the realm of human activity, and insisted that they should retain the same objectivity, rationalism, and approach to causality. He developed the notion of objective sui generis "social facts" to serve as unique empirical objects for the science of sociology to study. The variety of positivism that remains dominant today is termed instrumental positivism. This approach eschews epistemological and metaphysical concerns (such as the nature of social facts) in favour of methodological clarity, replicability, reliability and validity. This positivism is more or less synonymous with quantitative research, and so only resembles older positivism in practice. Since it carries no explicit philosophical commitment, its practitioners may not belong to any particular school of thought. Modern sociology of this type is often credited to Paul Lazarsfeld, who pioneered large-scale survey studies and developed statistical techniques for analysing them. This approach lends itself to what Robert K. Merton called middle-range theory: abstract statements that generalize from segregated hypotheses and empirical regularities rather than starting with an abstract idea of a social whole. The German philosopher Hegel criticised traditional empiricist epistemology, which he rejected as uncritical, and determinism, which he viewed as overly mechanistic.: 169 Karl Marx's methodology borrowed from Hegelian dialecticism but also a rejection of positivism in favour of critical analysis, seeking to supplement the empirical acquisition of "facts" with the elimination of illusions.: 202–3 He maintained that appearances need to be critiqued rather than simply documented. Early hermeneuticians such as Wilhelm Dilthey pioneered the distinction between natural and social science ('Geisteswissenschaft'). Various neo-Kantian philosophers, phenomenologists and human scientists further theorized how the analysis of the social world differs to that of the natural world due to the irreducibly complex aspects of human society, culture, and being. In the Italian context of development of social sciences and of sociology in particular, there are oppositions to the first foundation of the discipline, sustained by speculative philosophy in accordance with the antiscientific tendencies matured by critique of positivism and evolutionism, so a tradition Progressist struggles to establish itself. At the turn of the 20th century, the first generation of German sociologists formally introduced methodological anti-positivism, proposing that research should concentrate on human cultural norms, values, symbols, and social processes viewed from a resolutely subjective perspective. Max Weber argued that sociology may be loosely described as a science as it is able to identify causal relationships of human "social action"—especially among "ideal types", or hypothetical simplifications of complex social phenomena.: 239–40 As a non-positivist, however, Weber sought relationships that are not as "historical, invariant, or generalisable": 241 as those pursued by natural scientists. Fellow German sociologist, Ferdinand Tönnies, theorised on two crucial abstract concepts with his work on "gemeinschaft and gesellschaft" (lit. 'community' and 'society'). Tönnies marked a sharp line between the realm of concepts and the reality of social action: the first must be treated axiomatically and in a deductive way ("pure sociology"), whereas the second empirically and inductively ("applied sociology"). [Sociology is] ... the science whose object is to interpret the meaning of social action and thereby give a causal explanation of the way in which the action proceeds and the effects which it produces. By 'action' in this definition is meant the human behaviour when and to the extent that the agent or agents see it as subjectively meaningful ... the meaning to which we refer may be either (a) the meaning actually intended either by an individual agent on a particular historical occasion or by a number of agents on an approximate average in a given set of cases, or (b) the meaning attributed to the agent or agents, as types, in a pure type constructed in the abstract. In neither case is the 'meaning' to be thought of as somehow objectively 'correct' or 'true' by some metaphysical criterion. This is the difference between the empirical sciences of action, such as sociology and history, and any kind of prior discipline, such as jurisprudence, logic, ethics, or aesthetics whose aim is to extract from their subject-matter 'correct' or 'valid' meaning. — Max Weber, The Nature of Social Action (1922), p. 7 Both Weber and Georg Simmel pioneered the "Verstehen" (or 'interpretative') method in social science; a systematic process by which an outside observer attempts to relate to a particular cultural group, or indigenous people, on their own terms and from their own point of view. Through the work of Simmel, in particular, sociology acquired a possible character beyond positivist data-collection or grand, deterministic systems of structural law. Relatively isolated from the sociological academy throughout his lifetime, Simmel presented idiosyncratic analyses of modernity more reminiscent of the phenomenological and existential writers than of Comte or Durkheim, paying particular concern to the forms of, and possibilities for, social individuality. His sociology engaged in a neo-Kantian inquiry into the limits of perception, asking 'What is society?' in a direct allusion to Kant's question 'What is nature?' The deepest problems of modern life flow from the attempt of the individual to maintain the independence and individuality of his existence against the sovereign powers of society, against the weight of the historical heritage and the external culture and technique of life. The antagonism represents the most modern form of the conflict which primitive man must carry on with nature for his bodily existence. The eighteenth century may have called for liberation from all the ties which grew up historically in politics, in religion, in morality, and in economics to permit the original natural virtue of man, which is equal in everyone, to develop without inhibition; the nineteenth century may have sought to promote, in addition to man's freedom, his individuality (which is connected with the division of labor) and his achievements which make him unique and indispensable but which at the same time make him so much the more dependent on the complementary activity of others; Nietzsche may have seen the relentless struggle of the individual as the prerequisite for his full development, while socialism found the same thing in the suppression of all competition – but in each of these the same fundamental motive was at work, namely the resistance of the individual to being leveled, swallowed up in the social-technological mechanism. — Georg Simmel, The Metropolis and Mental Life (1903) The contemporary discipline of sociology is theoretically multi-paradigmatic in line with the contentions of classical social theory. Randall Collins' well-cited survey of sociological theory retroactively labels various theorists as belonging to four theoretical traditions: Functionalism, Conflict, Symbolic Interactionism, and Utilitarianism. Accordingly, modern sociological theory predominantly descends from functionalist (Durkheim) and conflict (Marx and Weber) approaches to social structure, as well as from symbolic-interactionist approaches to social interaction, such as micro-level structural (Simmel) and pragmatist (Mead, Cooley) perspectives. Utilitarianism (also known as rational choice or social exchange), although often associated with economics, is an established tradition within sociological theory. Lastly, as argued by Raewyn Connell, a tradition that is often forgotten is that of Social Darwinism, which applies the logic of Darwinian biological evolution to people and societies. This tradition often aligns with classical functionalism, and was once the dominant theoretical stance in American sociology, from c. 1881 – c. 1915, associated with several founders of sociology, primarily Herbert Spencer, Lester F. Ward, and William Graham Sumner. Contemporary sociological theory retains traces of each of these traditions and they are by no means mutually exclusive.[citation needed] A broad historical paradigm in both sociology and anthropology, functionalism addresses the social structure—referred to as "social organization" by the classical theorists—with respect to the whole as well as the necessary function of the whole's constituent elements. A common analogy (popularized by Herbert Spencer) is to regard norms and institutions as 'organs' that work towards the proper functioning of the entire 'body' of society. The perspective was implicit in the original sociological positivism of Comte but was theorized in full by Durkheim, again with respect to observable, structural laws. Functionalism also has an anthropological basis in the work of theorists such as Marcel Mauss, Bronisław Malinowski, and Radcliffe-Brown. It is in the latter's specific usage that the prefix "structural" emerged. Classical functionalist theory is generally united by its tendency towards biological analogy and notions of social evolutionism, in that the basic form of society would increase in complexity and those forms of social organization that promoted solidarity would eventually overcome social disorganization. As Giddens states: Functionalist thought, from Comte onwards, has looked particularly towards biology as the science providing the closest and most compatible model for social science. Biology has been taken to provide a guide to conceptualizing the structure and the function of social systems and to analyzing processes of evolution via mechanisms of adaptation. Functionalism strongly emphasizes the pre-eminence of the social world over its individual parts (i.e. its constituent actors, human subjects). Functionalist theories emphasize "cohesive systems" and are often contrasted with "conflict theories", which critique the overarching socio-political system or emphasize the inequality between particular groups. The following quotes from Durkheim and Marx epitomize the political, as well as theoretical, disparities, between functionalist and conflict thought respectively: To aim for a civilization beyond that made possible by the nexus of the surrounding environment will result in unloosing sickness into the very society we live in. Collective activity cannot be encouraged beyond the point set by the condition of the social organism without undermining health. — Émile Durkheim, The Division of Labour in Society (1893) The history of all hitherto existing society is the history of class struggles. Freeman and slave, patrician and plebeian, lord and serf, guild-master and journeyman, in a word, oppressor and oppressed, stood in constant opposition to one another, carried on an uninterrupted, now hidden, now open fight, a fight that each time ended, either in a revolutionary re-constitution of society at large, or in the common ruin of the contending classes. — Karl Marx & Friedrich Engels, The Communist Manifesto (1848) Symbolic interaction—often associated with interactionism, phenomenology, dramaturgy, interpretivism—is a sociological approach that places emphasis on subjective meanings and the empirical unfolding of social processes, generally accessed through micro-analysis. This tradition emerged in the Chicago School of the 1920s and 1930s, which, prior to World War II, "had been the center of sociological research and graduate study."[page needed] The approach focuses on creating a framework for building a theory that sees society as the product of the everyday interactions of individuals. Society is nothing more than the shared reality that people construct as they interact with one another. This approach sees people interacting in countless settings using symbolic communications to accomplish the tasks at hand. Therefore, society is a complex, ever-changing mosaic of subjective meanings.: 19 Some critics of this approach argue that it only looks at what is happening in a particular social situation, and disregards the effects that culture, race or gender (i.e. social-historical structures) may have in that situation. Some important sociologists associated with this approach include Max Weber, George Herbert Mead, Erving Goffman, George Homans, and Peter Blau. It is also in this tradition that the radical-empirical approach of ethnomethodology emerges from the work of Harold Garfinkel. Utilitarianism is often referred to as exchange theory or rational choice theory in the context of sociology. This tradition tends to privilege the agency of individual rational actors and assumes that within interactions individuals always seek to maximize their own self-interest. As argued by Josh Whitford, rational actors are assumed to have four basic elements: Exchange theory is specifically attributed to the work of George C. Homans, Peter Blau and Richard Emerson. Organizational sociologists James G. March and Herbert A. Simon noted that an individual's rationality is bounded by the context or organizational setting. The utilitarian perspective in sociology was, most notably, revitalized in the late 20th century by the work of former ASA president James Coleman.[citation needed] Following the decline of theories of sociocultural evolution in the United States, the interactionist thought of the Chicago School dominated American sociology. As Anselm Strauss describes, "we didn't think symbolic interaction was a perspective in sociology; we thought it was sociology." Moreover, philosophical and psychological pragmatism grounded this tradition. After World War II, mainstream sociology shifted to the survey-research of Paul Lazarsfeld at Columbia University and the general theorizing of Pitirim Sorokin, followed by Talcott Parsons at Harvard University. Ultimately, "the failure of the Chicago, Columbia, and Wisconsin [sociology] departments to produce a significant number of graduate students interested in and committed to general theory in the years 1936–45 was to the advantage of the Harvard department." As Parsons began to dominate general theory, his work primarily referenced European sociology—almost entirely omitting citations of both the American tradition of sociocultural-evolution as well as pragmatism. In addition to Parsons' revision of the sociological canon (which included Marshall, Pareto, Weber and Durkheim), the lack of theoretical challenges from other departments nurtured the rise of the Parsonian structural-functionalist movement, which reached its crescendo in the 1950s, but by the 1960s was in rapid decline. By the 1980s, most functionalist perspectives in Europe had broadly been replaced by conflict-oriented approaches, and to many in the discipline, functionalism was considered "as dead as a dodo:" According to Giddens: The orthodox consensus terminated in the late 1960s and 1970s as the middle ground shared by otherwise competing perspectives gave way and was replaced by a baffling variety of competing perspectives. This third 'generation' of social theory includes phenomenologically inspired approaches, critical theory, ethnomethodology, symbolic interactionism, structuralism, post-structuralism, and theories written in the tradition of hermeneutics and ordinary language philosophy. While some conflict approaches also gained popularity in the United States, the mainstream of the discipline instead shifted to a variety of empirically oriented middle-range theories with no single overarching, or "grand", theoretical orientation. John Levi Martin refers to this "golden age of methodological unity and theoretical calm" as the Pax Wisconsana, as it reflected the composition of the sociology department at the University of Wisconsin–Madison: numerous scholars working on separate projects with little contention. Omar Lizardo describes the pax wisconsana as "a Midwestern flavored, Mertonian resolution of the theory/method wars in which [sociologists] all agreed on at least two working hypotheses: (1) grand theory is a waste of time; [and] (2) good theory has to be good to think with or goes in the trash bin." Despite the aversion to grand theory in the latter half of the 20th century, several new traditions have emerged that propose various syntheses: structuralism, post-structuralism, cultural sociology and systems theory.[citation needed] Some sociologists have called for a return to 'grand theory' to combat the rise of scientific and pragmatist influences within the tradition of sociological thought (see Duane Rousselle). The structuralist movement originated primarily from the work of Durkheim as interpreted by two European scholars: Anthony Giddens, a sociologist, whose theory of structuration draws on the linguistic theory of Ferdinand de Saussure; and Claude Lévi-Strauss, an anthropologist. In this context, 'structure' does not refer to 'social structure', but to the semiotic understanding of human culture as a system of signs. One may delineate four central tenets of structuralism: The second tradition of structuralist thought, contemporaneous with Giddens, emerges from the American School of social network analysis in the 1970s and 1980s, spearheaded by the Harvard Department of Social Relations led by Harrison White and his students. This tradition of structuralist thought argues that, rather than semiotics, social structure is networks of patterned social relations. And, rather than Levi-Strauss, this school of thought draws on the notions of structure as theorized by Levi-Strauss' contemporary anthropologist, Radcliffe-Brown. Some refer to this as "network structuralism", and equate it to "British structuralism" as opposed to the "French structuralism" of Levi-Strauss. Post-structuralist thought has tended to reject 'humanist' assumptions in the construction of social theory. Michel Foucault provides an important critique in his Archaeology of the Human Sciences, though Habermas (1986) and Rorty (1986) have both argued that Foucault merely replaces one such system of thought with another. The dialogue between these intellectuals highlights a trend in recent years for certain schools of sociology and philosophy to intersect. The anti-humanist position has been associated with "postmodernism", a term used in specific contexts to describe an era or phenomena, but occasionally construed as a method.[citation needed] Central theoretical problems Overall, there is a strong consensus regarding the central problems of sociological theory, which are largely inherited from the classical theoretical traditions. This consensus is: how to link, transcend or cope with the following "big three" dichotomies: Lastly, sociological theory often grapples with the problem of integrating or transcending the divide between micro, meso, and macro-scale social phenomena, which is a subset of all three central problems.[citation needed] The problem of subjectivity and objectivity can be divided into two parts: a concern over the general possibilities of social actions, and the specific problem of social scientific knowledge. In the former, the subjective is often equated (though not necessarily) with the individual, and the individual's intentions and interpretations of the objective. The objective is often considered any public or external action or outcome, on up to society writ large. A primary question for social theorists, then, is how knowledge reproduces along the chain of subjective-objective-subjective, that is to say: how is intersubjectivity achieved? While, historically, qualitative methods have attempted to tease out subjective interpretations, quantitative survey methods also attempt to capture individual subjectivities. Qualitative methods take an approach to objective description known as in situ, meaning that descriptions must have appropriate contextual information to understand the information. The latter concern with scientific knowledge results from the fact that a sociologist is part of the very object they seek to explain, as Bourdieu explains: How can the sociologist effect in practice this radical doubting which is indispensable for bracketing all the presuppositions inherent in the fact that she is a social being, that she is therefore socialised and led to feel "like a fish in water" within that social world whose structures she has internalised? How can she prevent the social world itself from carrying out the construction of the object, in a sense, through her, through these unself-conscious operations or operations unaware of themselves of which she is the apparent subject? — Pierre Bourdieu, "The Problem of Reflexive Sociology", An Invitation to Reflexive Sociology (1992), p. 235 Structure and agency, sometimes referred to as determinism versus voluntarism, form an enduring ontological debate in social theory: "Do social structures determine an individual's behaviour or does human agency?" In this context, agency refers to the capacity of individuals to act independently and make free choices, whereas structure relates to factors that limit or affect the choices and actions of individuals (e.g. social class, religion, gender, ethnicity, etc.). Discussions over the primacy of either structure or agency relate to the core of sociological epistemology (i.e. "what is the social world made of?", "what is a cause in the social world, and what is an effect?"). A perennial question within this debate is that of "social reproduction": how are structures (specifically, structures producing inequality) reproduced through the choices of individuals? Synchrony and diachrony (or statics and dynamics) within social theory are terms that refer to a distinction that emerged through the work of Levi-Strauss who inherited it from the linguistics of Ferdinand de Saussure. Synchrony slices moments of time for analysis, thus it is an analysis of static social reality. Diachrony, on the other hand, attempts to analyse dynamic sequences. Following Saussure, synchrony would refer to social phenomena as a static concept like a language, while diachrony would refer to unfolding processes like actual speech. In Anthony Giddens' introduction to Central Problems in Social Theory, he states that, "in order to show the interdependence of action and structure…we must grasp the time space relations inherent in the constitution of all social interaction." And like structure and agency, time is integral to discussion of social reproduction. In terms of sociology, historical sociology is often better positioned to analyse social life as diachronic, while survey research takes a snapshot of social life and is thus better equipped to understand social life as synchronized. Some argue that the synchrony of social structure is a methodological perspective rather than an ontological claim. Nonetheless, the problem for theory is how to integrate the two manners of recording and thinking about social data. Research methodology Sociological research methods may be divided into two broad, though often supplementary, categories: Sociologists are often divided into camps of support for particular research techniques. These disputes relate to the epistemological debates at the historical core of social theory. While very different in many aspects, both qualitative and quantitative approaches involve a systematic interaction between theory and data. Quantitative methodologies hold the dominant position in sociology, especially in the United States. In the discipline's two most cited journals, quantitative articles have historically outnumbered qualitative ones by a factor of two. (Most articles published in the largest British journal, on the other hand, are qualitative.) Most textbooks on the methodology of social research are written from the quantitative perspective, and the very term "methodology" is often used synonymously with "statistics". Practically all sociology PhD programmes in the United States require training in statistical methods. The work produced by quantitative researchers is also deemed more 'trustworthy' and 'unbiased' by the general public, though this judgment continues to be challenged by antipositivists. The choice of method often depends largely on what the researcher intends to investigate. For example, a researcher concerned with drawing a statistical generalization across an entire population may administer a survey questionnaire to a representative sample population. By contrast, a researcher who seeks full contextual understanding of an individual's social actions may choose ethnographic participant observation or open-ended interviews. Studies will commonly combine, or 'triangulate', quantitative and qualitative methods as part of a 'multi-strategy' design. For instance, a quantitative study may be performed to obtain statistical patterns on a target sample, and then combined with a qualitative interview to determine the play of agency. Quantitative methods are often used to ask questions about a population that is very large, making a census or a complete enumeration of all the members in that population infeasible. A 'sample' then forms a manageable subset of a population. In quantitative research, statistics are used to draw inferences from this sample regarding the population as a whole. The process of selecting a sample is referred to as 'sampling'. While it is usually best to sample randomly, concern with differences between specific subpopulations sometimes calls for stratified sampling. Conversely, the impossibility of random sampling sometimes necessitates nonprobability sampling, such as convenience sampling or snowball sampling. The following list of research methods is neither exclusive nor exhaustive: Sociologists increasingly draw upon computationally intensive methods to analyse and model social phenomena. Using computer simulations, artificial intelligence, text mining, complex statistical methods, and new analytic approaches like social network analysis and social sequence analysis, computational sociology develops and tests theories of complex social processes through bottom-up modelling of social interactions. Although the subject matter and methodologies in social science differ from those in natural science or computer science, several of the approaches used in contemporary social simulation originated from fields such as physics and artificial intelligence. By the same token, some of the approaches that originated in computational sociology have been imported into the natural sciences, such as measures of network centrality from the fields of social network analysis and network science. In relevant literature, computational sociology is often related to the study of social complexity. Social complexity concepts such as complex systems, non-linear interconnection among macro and micro process, and emergence, have entered the vocabulary of computational sociology. A practical and well-known example is the construction of a computational model in the form of an "artificial society", by which researchers can analyse the structure of a social system. Subfields Sociologists' approach to culture can be divided into "sociology of culture" and "cultural sociology"—terms which are similar, though not entirely interchangeable. Sociology of culture is an older term, and considers some topics and objects as more or less "cultural" than others. Conversely, cultural sociology sees all social phenomena as inherently cultural. Sociology of culture often attempts to explain certain cultural phenomena as a product of social processes, while cultural sociology sees culture as a potential explanation of social phenomena. For Simmel, culture referred to "the cultivation of individuals through the agency of external forms which have been objectified in the course of history." While early theorists such as Durkheim and Mauss were influential in cultural anthropology, sociologists of culture are generally distinguished by their concern for modern (rather than primitive or ancient) society. Cultural sociology often involves the hermeneutic analysis of words, artefacts and symbols, or ethnographic interviews. However, some sociologists employ historical-comparative or quantitative techniques in the analysis of culture, Weber and Bourdieu for instance. The subfield is sometimes allied with critical theory in the vein of Theodor W. Adorno, Walter Benjamin, and other members of the Frankfurt School. Loosely distinct from the sociology of culture is the field of cultural studies. Birmingham School theorists such as Richard Hoggart and Stuart Hall questioned the division between "producers" and "consumers" evident in earlier theory, emphasizing the reciprocity in the production of texts. Cultural Studies aims to examine its subject matter in terms of cultural practices and their relation to power. For example, a study of a subculture (e.g. white working class youth in London) would consider the social practices of the group as they relate to the dominant class. The "cultural turn" of the 1960s ultimately placed culture much higher on the sociological agenda.[citation needed] Sociology of literature, film, and art is a subset of the sociology of culture. This field studies the social production of artistic objects and its social implications. A notable example is Pierre Bourdieu's Les Règles de L'Art: Genèse et Structure du Champ Littéraire (1992). None of the founding fathers of sociology produced a detailed study of art, but they did develop ideas that were subsequently applied to literature by others. Marx's theory of ideology was directed at literature by Pierre Macherey, Terry Eagleton and Fredric Jameson. Weber's theory of modernity as cultural rationalization, which he applied to music, was later applied to all the arts, literature included, by Frankfurt School writers such as Theodor Adorno and Jürgen Habermas. Durkheim's view of sociology as the study of externally defined social facts was redirected towards literature by Robert Escarpit. Bourdieu's own work is clearly indebted to Marx, Weber and Durkheim.[citation needed] Criminologists analyse the nature, causes, and control of criminal activity, drawing upon methods across sociology, psychology, and the behavioural sciences. The sociology of deviance focuses on actions or behaviours that violate norms, including both infringements of formally enacted rules (e.g., crime) and informal violations of cultural norms. It is the remit of sociologists to study why these norms exist; how they change over time; and how they are enforced. The concept of social disorganization is when the broader social systems leads to violations of norms. For instance, Robert K. Merton produced a typology of deviance, which includes both individual and system level causal explanations of deviance. The study of law played a significant role in the formation of classical sociology. Durkheim famously described law as the "visible symbol" of social solidarity. The sociology of law refers to both a sub-discipline of sociology and an approach within the field of legal studies. Sociology of law is a diverse field of study that examines the interaction of law with other aspects of society, such as the development of legal institutions and the effect of laws on social change and vice versa. For example, an influential recent work in the field relies on statistical analyses to argue that the increase in incarceration in the US over the last 30 years is due to changes in law and policing and not to an increase in crime; and that this increase has significantly contributed to the persistence of racial stratification. The sociology of communications and information technologies includes "the social aspects of computing, the Internet, new media, computer networks, and other communication and information technologies." The Internet is of interest to sociologists in various ways, most practically as a tool for research and as a discussion platform. The sociology of the Internet in the broad sense concerns the analysis of online communities (e.g. newsgroups, social networking sites) and virtual worlds, meaning that there is often overlap with community sociology. Online communities may be studied statistically through network analysis or interpreted qualitatively through virtual ethnography. Moreover, organizational change is catalysed through new media, thereby influencing social change at-large, perhaps forming the framework for a transformation from an industrial to an informational society. One notable text is Manuel Castells' The Internet Galaxy—the title of which forms an inter-textual reference to Marshall McLuhan's The Gutenberg Galaxy. Closely related to the sociology of the Internet is digital sociology, which expands the scope of study to address not only the internet but also the impact of the other digital media and devices that have emerged since the first decade of the twenty-first century.[citation needed] As with cultural studies, media study is a distinct discipline that owes to the convergence of sociology and other social sciences and humanities, in particular, literary criticism and critical theory. Though neither the production process nor the critique of aesthetic forms is in the remit of sociologists, analyses of socializing factors, such as ideological effects and audience reception, stem from sociological theory and method. Thus the 'sociology of the media' is not a subdiscipline per se, but the media is a common and often indispensable topic.[citation needed] The term "economic sociology" was first used by William Stanley Jevons in 1879, later to be coined in the works of Durkheim, Weber, and Simmel between 1890 and 1920. Economic sociology arose as a new approach to the analysis of economic phenomena, emphasizing class relations and modernity as a philosophical concept. The relationship between capitalism and modernity is a salient issue, perhaps best demonstrated in Weber's The Protestant Ethic and the Spirit of Capitalism (1905) and Simmel's The Philosophy of Money (1900). The contemporary period of economic sociology, also known as new economic sociology, was consolidated by the 1985 work of Mark Granovetter titled "Economic Action and Social Structure: The Problem of Embeddedness". This work elaborated the concept of embeddedness, which states that economic relations between individuals or firms take place within existing social relations (and are thus structured by these relations as well as the greater social structures of which those relations are a part). Social network analysis has been the primary methodology for studying this phenomenon. Granovetter's theory of the strength of weak ties and Ronald Burt's concept of structural holes are two of the best known theoretical contributions of this field.[citation needed] The sociology of work, or industrial sociology, examines "the direction and implications of trends in technological change, globalization, labour markets, work organization, managerial practices and employment relations to the extent to which these trends are intimately related to changing patterns of inequality in modern societies and to the changing experiences of individuals and families the ways in which workers challenge, resist and make their own contributions to the patterning of work and shaping of work institutions." The sociology of education is the study of how educational institutions determine social structures, experiences, and other outcomes. It is particularly concerned with the schooling systems of modern industrial societies. A classic 1966 study in this field by James Coleman, known as the "Coleman Report", analysed the performance of over 150,000 students and found that student background and socioeconomic status are much more important in determining educational outcomes than are measured differences in school resources (i.e. per pupil spending). The controversy over "school effects" ignited by that study has continued to this day. The study also found that socially disadvantaged black students profited from schooling in racially mixed classrooms, and thus served as a catalyst for desegregation busing in American public schools.[citation needed] Environmental sociology is the study of human interactions with the natural environment, typically emphasizing human dimensions of environmental problems, social impacts of those problems, and efforts to resolve them. As with other sub-fields of sociology, scholarship in environmental sociology may be at one or multiple levels of analysis, from global (e.g. world-systems) to local, societal to individual. Attention is paid also to the processes by which environmental problems become defined and known to humans. As argued by notable environmental sociologist John Bellamy Foster, the predecessor to modern environmental sociology is Marx's analysis of the metabolic rift, which influenced contemporary thought on sustainability. Environmental sociology is often interdisciplinary and overlaps with the sociology of risk, rural sociology and the sociology of disaster.[citation needed] Human ecology deals with interdisciplinary study of the relationship between humans and their natural, social, and built environments. In addition to Environmental sociology, this field overlaps with architectural sociology, urban sociology, and to some extent visual sociology. In turn, visual sociology—which is concerned with all visual dimensions of social life—overlaps with media studies in that it uses photography, film and other technologies of media.[citation needed] Social pre-wiring deals with the study of fetal social behavior and social interactions in a multi-fetal environment. Specifically, social pre-wiring refers to the ontogeny of social interaction. Also informally referred to as, "wired to be social". The theory questions whether there is a propensity to socially oriented action already present before birth. Research in the theory concludes that newborns are born into the world with a unique genetic wiring to be social. Circumstantial evidence supporting the social pre-wiring hypothesis can be revealed when examining newborns' behavior. Newborns, not even hours after birth, have been found to display a preparedness for social interaction. This preparedness is expressed in ways such as their imitation of facial gestures. This observed behavior cannot be attributed to any current form of socialization or social construction. Rather, newborns most likely inherit to some extent social behavior and identity through genetics. Principal evidence of this theory is uncovered by examining Twin pregnancies. The main argument is, if there are social behaviors that are inherited and developed before birth, then one should expect twin foetuses to engage in some form of social interaction before they are born. Thus, ten foetuses were analyzed over a period of time using ultrasound techniques. Using kinematic analysis, the results of the experiment were that the twin foetuses would interact with each other for longer periods and more often as the pregnancies went on. Researchers were able to conclude that the performance of movements between the co-twins were not accidental but specifically aimed. The social pre-wiring hypothesis was proved correct: The central advance of this study is the demonstration that 'social actions' are already performed in the second trimester of gestation. Starting from the 14th week of gestation twin foetuses plan and execute movements specifically aimed at the co-twin. These findings force us to predate the emergence of social behavior: when the context enables it, as in the case of twin foetuses, other-directed actions are not only possible but predominant over self-directed actions. Family, gender and sexuality form a broad area of inquiry studied in many sub-fields of sociology. A family is a group of people who are related by kinship ties :- Relations of blood / marriage / civil partnership or adoption. The family unit is one of the most important social institutions found in some form in nearly all known societies. It is the basic unit of social organization and plays a key role in socializing children into the culture of their society. The sociology of the family examines the family, as an institution and unit of socialization, with special concern for the comparatively modern historical emergence of the nuclear family and its distinct gender roles. The notion of "childhood" is also significant. As one of the more basic institutions to which one may apply sociological perspectives, the sociology of the family is a common component on introductory academic curricula. Feminist sociology, on the other hand, is a normative sub-field that observes and critiques the cultural categories of gender and sexuality, particularly with respect to power and inequality. The primary concern of feminist theory is the patriarchy and the systematic oppression of women apparent in many societies, both at the level of small-scale interaction and in terms of the broader social structure. Feminist sociology also analyses how gender interlocks with race and class to produce and perpetuate social inequalities. "How to account for the differences in definitions of femininity and masculinity and in sex role across different societies and historical periods" is also a concern. The sociology of health and illness focuses on the social effects of, and public attitudes toward, illnesses, diseases, mental health and disabilities. This sub-field also overlaps with gerontology and the study of the ageing process. Medical sociology, by contrast, focuses on the inner-workings of the medical profession, its organizations, its institutions and how these can shape knowledge and interactions. In Britain, sociology was introduced into the medical curriculum following the Goodenough Report (1944). The sociology of the body and embodiment takes a broad perspective on the idea of "the body" and includes "a wide range of embodied dynamics including human and non-human bodies, morphology, human reproduction, anatomy, body fluids, biotechnology, genetics". This often intersects with health and illness, but also theories of bodies as political, social, cultural, economic and ideological productions. The ISA maintains a Research Committee devoted to "the Body in the Social Sciences". A subfield of the sociology of health and illness that overlaps with cultural sociology is the study of death, dying and bereavement, sometimes referred to broadly as the sociology of death. This topic is exemplified by the work of Douglas Davies and Michael C. Kearl.[citation needed] The sociology of knowledge is the study of the relationship between human thought and the social context within which it arises, and of the effects prevailing ideas have on societies. The term first came into widespread use in the 1920s, when a number of German-speaking theorists, most notably Max Scheler, and Karl Mannheim, wrote extensively on it. With the dominance of functionalism through the middle years of the 20th century, the sociology of knowledge tended to remain on the periphery of mainstream sociological thought. It was largely reinvented and applied much more closely to everyday life in the 1960s, particularly by Peter L. Berger and Thomas Luckmann in The Social Construction of Reality (1966) and is still central for methods dealing with qualitative understanding of human society (compare socially constructed reality). The "archaeological" and "genealogical" studies of Michel Foucault are of considerable contemporary influence. The sociology of science involves the study of science as a social activity, especially dealing "with the social conditions and effects of science, and with the social structures and processes of scientific activity." Important theorists in the sociology of science include Robert K. Merton and Bruno Latour. These branches of sociology have contributed to the formation of science and technology studies. Both the ASA and the BSA have sections devoted to the subfield of Science, Knowledge and Technology. The ISA maintains a Research Committee on Science and Technology. Sociology of leisure is the study of how humans organize their free time. Leisure includes a broad array of activities, such as sport, tourism, and the playing of games. The sociology of leisure is closely tied to the sociology of work, as each explores a different side of the work–leisure relationship. More recent studies in the field move away from the work–leisure relationship and focus on the relation between leisure and culture. This area of sociology began with Thorstein Veblen's Theory of the Leisure Class. This subfield of sociology studies, broadly, the dynamics of war, conflict resolution, peace movements, war refugees, conflict resolution and military institutions. As a subset of this subfield, military sociology aims towards the systematic study of the military as a social group rather than as an organization. It is a highly specialized sub-field which examines issues related to service personnel as a distinct group with coerced collective action based on shared interests linked to survival in vocation and combat, with purposes and values that are more defined and narrower than within civil society. Military sociology also concerns civilian-military relations and interactions between other groups or governmental agencies. Topics include the dominant assumptions held by those in the military, changes in military members' willingness to fight, military unionization, military professionalism, the increased utilization of women, the military industrial-academic complex, the military's dependence on research, and the institutional and organizational structure of military. Historically, political sociology concerned the relations between political organization and society. A typical research question in this area might be: "Why do so few American citizens choose to vote?" In this respect questions of political opinion formation brought about some of the pioneering uses of statistical survey research by Paul Lazarsfeld. A major subfield of political sociology developed in relation to such questions, which draws on comparative history to analyse socio-political trends. The field developed from the work of Max Weber and Moisey Ostrogorsky. Contemporary political sociology includes these areas of research, but it has been opened up to wider questions of power and politics. Today political sociologists are as likely to be concerned with how identities are formed that contribute to structural domination by one group over another; the politics of who knows how and with what authority; and questions of how power is contested in social interactions in such a way as to bring about widespread cultural and social change. Such questions are more likely to be studied qualitatively. The study of social movements and their effects has been especially important in relation to these wider definitions of politics and power. Political sociology has also moved beyond methodological nationalism and analysed the role of non-governmental organizations, the diffusion of the nation-state throughout the Earth as a social construct, and the role of stateless entities in the modern world society. Contemporary political sociologists also study inter-state interactions and human rights.[citation needed] Demographers or sociologists of population study the size, composition and change over time of a given population. Demographers study how these characteristics impact, or are impacted by, various social, economic or political systems. The study of population is also closely related to human ecology and environmental sociology, which studies a population's relationship with the surrounding environment and often overlaps with urban or rural sociology. Researchers in this field may study the movement of populations: transportation, migrations, diaspora, etc., which falls into the subfield known as mobilities studies and is closely related to human geography. Demographers may also study spread of disease within a given population or epidemiology.[citation needed] Public sociology refers to an approach to the discipline which seeks to transcend the academy in order to engage with wider audiences. It is perhaps best understood as a style of sociology rather than a particular method, theory, or set of political values. This approach is primarily associated with Michael Burawoy who contrasted it with professional sociology, a form of academic sociology that is concerned primarily with addressing other professional sociologists. Public sociology is also part of the broader field of science communication or science journalism.[citation needed] The sociology of race and of ethnic relations is the area of the discipline that studies the social, political, and economic relations between races and ethnicities at all levels of society. This area encompasses the study of racism, residential segregation, and other complex social processes between different racial and ethnic groups. This research frequently interacts with other areas of sociology such as stratification and social psychology, as well as with postcolonial theory. At the level of political policy, ethnic relations are discussed in terms of either assimilationism or multiculturalism. Anti-racism forms another style of policy, particularly popular in the 1960s and 1970s.[citation needed] The sociology of religion concerns the practices, historical backgrounds, developments, universal themes and roles of religion in society. There is particular emphasis on the recurring role of religion in all societies and throughout recorded history. The sociology of religion is distinguished from the philosophy of religion in that sociologists do not set out to assess the validity of religious truth-claims, instead assuming what Peter L. Berger has described as a position of "methodological atheism". It may be said that the modern formal discipline of sociology began with the analysis of religion in Durkheim's 1897 study of suicide rates among Roman Catholic and Protestant populations. Max Weber published four major texts on religion in a context of economic sociology and social stratification: The Protestant Ethic and the Spirit of Capitalism (1905), The Religion of China: Confucianism and Taoism (1915), The Religion of India: The Sociology of Hinduism and Buddhism (1915), and Ancient Judaism (1920). Contemporary debates often centre on topics such as secularization, civil religion, the intersection of religion and economics and the role of religion in a context of globalization and multiculturalism. The sociology of change and development attempts to understand how societies develop and how they can be changed. This includes studying many different aspects of society, for example demographic trends, political or technological trends, or changes in culture. Within this field, sociologists often use macrosociological methods or historical-comparative methods. In contemporary studies of social change, there are overlaps with international development or community development. However, most of the founders of sociology had theories of social change based on their study of history. For instance, Marx contended that the material circumstances of society ultimately caused the ideal or cultural aspects of society, while Weber argued that it was in fact the cultural mores of Protestantism that ushered in a transformation of material circumstances. In contrast to both, Durkheim argued that societies moved from simple to complex through a process of sociocultural evolution. Sociologists in this field also study processes of globalization and imperialism. Most notably, Immanuel Wallerstein extends Marx's theoretical frame to include large spans of time and the entire globe in what is known as world systems theory. Development sociology is also heavily influenced by post-colonialism. In recent years, Raewyn Connell issued a critique of the bias in sociological research towards countries in the Global North. She argues that this bias blinds sociologists to the lived experiences of the Global South, specifically, so-called, "Northern Theory" lacks an adequate theory of imperialism and colonialism.[citation needed] There are many organizations studying social change, including the Fernand Braudel Center for the Study of Economies, Historical Systems, and Civilizations, and the Global Social Change Research Project.[citation needed] A social network is a social structure composed of individuals (or organizations) called "nodes", which are tied (connected) by one or more specific types of interdependency, such as friendship, kinship, financial exchange, dislike, sexual relationships, or relationships of beliefs, knowledge or prestige. Social networks operate on many levels, from families up to the level of nations, and play a critical role in determining the way problems are solved, organizations are run, and the degree to which individuals succeed in achieving their goals. An underlying theoretical assumption of social network analysis is that groups are not necessarily the building blocks of society: the approach is open to studying less-bounded social systems, from non-local communities to networks of exchange. Drawing theoretically from relational sociology, social network analysis avoids treating individuals (persons, organizations, states) as discrete units of analysis, it focuses instead on how the structure of ties affects and constitutes individuals and their relationships. In contrast to analyses that assume that socialization into norms determines behaviour, network analysis looks to see the extent to which the structure and composition of ties affect norms. On the other hand, recent research by Omar Lizardo also demonstrates that network ties are shaped and created by previously existing cultural tastes. Social network theory is usually defined in formal mathematics and may include integration of geographical data into sociomapping.[citation needed] Sociological social psychology focuses on micro-scale social actions. This area may be described as adhering to "sociological miniaturism", examining whole societies through the study of individual thoughts and emotions as well as behaviour of small groups. One special concern to psychological sociologists is how to explain a variety of demographic, social, and cultural facts in terms of human social interaction. Some of the major topics in this field are social inequality, group dynamics, prejudice, aggression, social perception, group behaviour, social change, non-verbal behaviour, socialization, conformity, leadership, and social identity. Social psychology may be taught with psychological emphasis. In sociology, researchers in this field are the most prominent users of the experimental method (however, unlike their psychological counterparts, they also frequently employ other methodologies). Social psychology looks at social influences, as well as social perception and social interaction. Social stratification is the hierarchical arrangement of individuals into social classes, castes, and divisions within a society.: 225 Modern Western societies stratification traditionally relates to cultural and economic classes arranged in three main layers: upper class, middle class, and lower class, but each class may be further subdivided into smaller classes (e.g. occupational). Social stratification is interpreted in radically different ways within sociology. Proponents of structural functionalism suggest that, since the stratification of classes and castes is evident in all societies, hierarchy must be beneficial in stabilizing their existence. Conflict theorists, by contrast, critique the inaccessibility of resources and lack of social mobility in stratified societies.[citation needed] Karl Marx distinguished social classes by their connection to the means of production in the capitalist system: the bourgeoisie own the means, but this effectively includes the proletariat itself as the workers can only sell their own labour power (forming the material base of the cultural superstructure). Max Weber critiqued Marxist economic determinism, arguing that social stratification is not based purely on economic inequalities, but on other status and power differentials (e.g. patriarchy). According to Weber, stratification may occur among at least three complex variables: Pierre Bourdieu provides a modern example in the concepts of cultural and symbolic capital. Theorists such as Ralf Dahrendorf have noted the tendency towards an enlarged middle-class in modern Western societies, particularly in relation to the necessity of an educated work force in technological or service-based economies. Perspectives concerning globalization, such as dependency theory, suggest this effect owes to the shift of workers to the developing countries. Urban sociology involves the analysis of social life and human interaction in metropolitan areas. It is a discipline seeking to provide advice for planning and policy making. After the Industrial Revolution, works such as Georg Simmel's The Metropolis and Mental Life (1903) focused on urbanization and the effect it had on alienation and anonymity. In the 1920s and 1930s The Chicago School produced a major body of theory on the nature of the city, important to both urban sociology and criminology, utilizing symbolic interactionism as a method of field research. Contemporary research is commonly placed in a context of globalization, for instance, in Saskia Sassen's study of the "global city". Rural sociology, by contrast, is the analysis of non-metropolitan areas. As agriculture and wilderness tend to be a more prominent social fact in rural regions, rural sociologists often overlap with environmental sociologists.[citation needed] Often grouped with urban and rural sociology is that of community sociology or the sociology of community. Taking various communities—including online communities—as the unit of analysis, community sociologists study the origin and effects of different associations of people. For instance, German sociologist Ferdinand Tönnies distinguished between two types of human association: gemeinschaft (usually translated as "community") and gesellschaft ("society" or "association"). In his 1887 work, Gemeinschaft und Gesellschaft, Tönnies argued that Gemeinschaft is perceived to be a tighter and more cohesive social entity, due to the presence of a "unity of will". The 'development' or 'health' of a community is also a central concern of community sociologists also engage in development sociology, exemplified by the literature surrounding the concept of social capital.[citation needed] Other academic disciplines Sociology overlaps with a variety of disciplines that study society, in particular social anthropology, political science, economics, social work and social philosophy. Many comparatively new fields such as communication studies, cultural studies, demography and literary theory, draw upon methods that originated in sociology. The terms "social science" and "social research" have both gained a degree of autonomy since their origination in classical sociology. The distinct field of social anthropology or anthroposociology is the dominant constituent of anthropology throughout the United Kingdom and Commonwealth and much of Europe (France in particular), where it is distinguished from cultural anthropology. In the United States, social anthropology is commonly subsumed within cultural anthropology (or under the relatively new designation of sociocultural anthropology). Sociology and applied sociology are connected to the professional and academic discipline of social work. Both disciplines study social interactions, community and the effect of various systems (i.e. family, school, community, laws, political sphere) on the individual. However, social work is generally more focused on practical strategies to alleviate social dysfunctions; sociology in general provides a thorough examination of the root causes of these problems. For example, a sociologist might study why a community is plagued with poverty. The applied sociologist would be more focused on practical strategies on what needs to be done to alleviate this burden. The social worker would be focused on action; implementing theses strategies "directly" or "indirectly" by means of mental health therapy, counselling, advocacy, community organization or community mobilization. Social anthropology is the branch of anthropology that studies how contemporary living human beings behave in social groups. Practitioners of social anthropology, like sociologists, investigate various facets of social organization. Traditionally, social anthropologists analyzed non-industrial and non-Western societies, whereas sociologists focused on industrialized societies in the Western world. In recent years, however, social anthropology has expanded its focus to modern Western societies, meaning that the two disciplines increasingly converge. Sociocultural anthropology, which includes linguistic anthropology, is concerned with the problems of difference and similarity within and between human populations. The discipline arose concomitantly with the expansion of European colonial empires, and its practices and theories have been questioned and reformulated along with processes of decolonization. Such issues have re-emerged as transnational processes have challenged the centrality of the nation-state to theorizations about culture and power. New challenges have emerged as public debates about multiculturalism, and the increasing use of the culture concept outside of the academy and among peoples studied by anthropology.[citation needed] Irving Louis Horowitz, in his The Decomposition of Sociology (1994), has argued that the discipline, while arriving from a "distinguished lineage and tradition", is in decline due to deeply ideological theory and a lack of relevance to policy making: "The decomposition of sociology began when this great tradition became subject to ideological thinking, and an inferior tradition surfaced in the wake of totalitarian triumphs." Furthermore: "A problem yet unmentioned is that sociology's malaise has left all the social sciences vulnerable to pure positivism—to an empiricism lacking any theoretical basis. Talented individuals who might, in an earlier time, have gone into sociology are seeking intellectual stimulation in business, law, the natural sciences, and even creative writing; this drains sociology of much needed potential." Horowitz cites the lack of a 'core discipline' as exacerbating the problem. Randall Collins, the Dorothy Swaine Thomas Professor in Sociology at the University of Pennsylvania and a member of the Advisory Editors Council of the Social Evolution & History journal, has voiced similar sentiments: "we have lost all coherence as a discipline, we are breaking up into a conglomerate of specialities, each going on its own way and with none too high regard for each other." In 2007, The Times Higher Education Guide published a list of 'The most cited authors of books in the Humanities' (including philosophy and psychology). Seven of the top ten are listed as sociologists: Michel Foucault (1), Pierre Bourdieu (2), Anthony Giddens (5), Erving Goffman (6), Jürgen Habermas (7), Max Weber (8), and Bruno Latour (10). Journals The most highly ranked general journals which publish original research in the field of sociology are the American Journal of Sociology and the American Sociological Review. The Annual Review of Sociology, which publishes original review essays, is also highly ranked. Many other generalist and specialized journals exist. See also Notes References External links |
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List of programming languages This is an index to notable programming languages, in current or historical use. Dialects of BASIC (which have their own page), esoteric programming languages, and markup languages are not included. A programming language does not need to be imperative or Turing-complete, but must be executable and so does not include markup languages such as HTML or XML, but does include domain-specific languages such as SQL and its dialects. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also |
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Contents Emirates Mars Mission The Emirates Mars Mission (Arabic: مشروع الإمارات لاستكشاف المريخ, romanized: mašrū' al-Imārāt l-āstikšāf al-Murīkh) is a United Arab Emirates Space Agency uncrewed space exploration mission to Mars. The Hope probe (Arabic: مسبار الأمل, Misbar Al-Amal) was launched on 20 July 2020, and went into orbit around Mars on 9 February 2021. The project was headed by Omran Sharaf. 200 Emirati scientists and engineers from the UAE and partner institutes were involved in the project. The mission design, development, and operations are led by the Mohammed bin Rashid Space Centre (MBRSC). The spacecraft was assembled in the United States at the University of Colorado Boulder's Laboratory for Atmospheric and Space Physics (LASP) by the Emirati engineers, assisted by their American counterparts, with support from Arizona State University (ASU) and the University of California, Berkeley. The project was led by MBRSC at every stage. The space probe will study daily and seasonal weather cycles, weather events in the lower atmosphere such as dust storms, and how the weather varies in different regions of the planet. It will also add to knowledge about Mars atmospheric hydrogen and oxygen loss and other possible reasons behind the planet's drastic climate changes. The mission is being carried out by a team of Emirati engineers in collaboration with foreign research institutions, and is a contribution towards a knowledge-based economy in the UAE. Hope was the first of three space missions sent toward Mars during the July 2020 Mars launch window, with missions also launched by the national space agencies of China (Tianwen-1 orbiter, deployable and remote cameras, lander and Zhurong rover) and the United States (Mars 2020 and its Perseverance rover and Ingenuity helicopter drone). The spacecraft was launched from the Tanegashima Space Center in Japan with a Japanese rocket, the Mitsubishi Heavy Industries H-IIA launch vehicle. All three arrived at Mars in February 2021. The Emirates Mars Mission was the first of the three to arrive at Mars, performing a successful orbit entry maneuver on 9 February 2021. On 9 February 2021, the United Arab Emirates became the first Arab country and the fifth country to reach Mars and the second country to successfully enter Mars's orbit on its first try after India. In April 2023, The New York Times reported an updated global map of Mars based on images from the Hope spacecraft. Overview The idea for a UAE mission to Mars came from a UAE cabinet retreat at the end of 2013. The mission was announced by Sheikh Khalifa bin Zayed Al Nahyan, the President of the United Arab Emirates, in July 2014, and is aimed at enriching the capabilities of Emirati engineers and increasing human knowledge about the Martian atmosphere. The spacecraft is a Mars orbiter for studying the Martian atmosphere and climate. It was built by a joint Laboratory for Atmospheric and Space Physics (LASP)/Mohammed bin Rashid Space Centre (MBRSC) team at the University of Colorado Boulder with support from Arizona State University (ASU) and the University of California, Berkeley. The Hope probe was launched from Japan by a Japanese H-IIA launch vehicle, built and operated by Mitsubishi Heavy Industries (MHI) on 19 July 2020 and arrived at Mars on 9 February 2021. It became the first mission to Mars by any West Asian, Arab or Muslim-majority country. The UAE Space Agency (UAESA) and the Indian Space Research Organization set up a joint working group to assist UAESA in the Emirates Mars Mission. To accomplish the objectives of the Emirates Mars Mission, an agreement was signed between the United Arab Emirates Space Agency (UAESA) and MBRSC, under a directive given by Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai. As per the agreement, the Emirates Mars Mission will be funded by the UAE Space Agency and it will also supervise the complete execution process for the Hope probe. The agreement outlines the financial and legal framework along with assigning a timeline for the entire project. Under the agreement, MBRSC has been commissioned to design and manufacture the Hope probe. The mission deputy project manager and science lead, Sarah Al Amiri, collaborated with LASP, UC Berkeley, and ASU to design and build the orbiter. The project manager is Omran Sharaf. The name Hope (Arabic: al-Amal) was chosen because "it sends a message of optimism to millions of young Arabs", according to Sheikh Mohammed bin Rashid Al Maktoum. The resulting mission data will be shared freely with more than 200 institutions worldwide. The Hope probe is cuboid in shape and structure, with a mass of 1,350 kg (2,980 lb) including fuel. The probe is 2.37 m (7 ft 9 in) wide and 2.90 m (9 ft 6 in) long, equivalent to a small car. Hope uses two 900 watts solar panels to charge its batteries, and it communicates with Earth using a high-gain 1.5 m (4 ft 11 in) - wide dish antenna. The spacecraft is equipped with star tracker sensors which help determine its position in space by identifying the constellations in relation to the Sun. Six 120-N thrusters control the speed of the probe, and eight 5 N (1.1 lbf) reaction control system (RCS) thrusters are responsible for delicate maneuvers. The travel time of the Hope probe was about 200 days on its journey of 493×10^6 km (306×10^6 mi). Upon arrival, it entered an initial 40-hour orbit, from which it will perform a periapsis raising maneuver to enter a final orbit of 55 hour period (slightly over 2 Martian days) and study the Martian atmosphere for two years while its instruments help build holistic models of it. The data are expected to provide additional data on the escape of the atmosphere to outer space. The Hope probe will carry three scientific instruments to study the Martian atmosphere, which include a digital camera for high resolution coloured images, an infrared spectrometer which will examine the temperature profile, ice, water vapor in the atmosphere, and an ultraviolet spectrometer which will study the upper atmosphere and traces of oxygen and hydrogen further out into space. The mission is regarded as an investment in the UAE's economy and human capital. Sheikh Mohammed bin Rashid Al Maktoum mentioned three messages when he announced the mission: "The first message is for the world: that Arab civilisation once played a great role in contributing to human knowledge, and will play that role again; the second message is to our Arab brethren: that nothing is impossible, and that we can compete with the greatest of nations in the race for knowledge and the third message is for those who strive to reach the highest of peaks: set no limits to your ambitions, and you can reach even to space". The mission is timed to arrive at Mars before the fiftieth anniversary (2 December 2021) of the independence of the United Arab Emirates. According to the UAE's minister of cabinet affairs, Mohammad bin Abdullah Al Gergawi, the mission's cost was US$200 million. A prototype of the Hope spacecraft was displayed at the Dubai Airshow in November 2017. The prototype is a model built to give a general idea of what the spacecraft will look like. Project manager Omran Sharaf said the mission is on track to launch in July 2020. The spacecraft was successfully launched on a Mitsubishi H-IIA rocket from the Tanegashima Space Center near Minamitane, Japan on 19 July 2020, at 21:58:14 UTC. The 2021 International Astronautical Congress is to be held in October 2021 in Dubai, eight months after the Hope Mars Mission enters orbit around Mars. This meeting was originally planned for 2020, but the 2020 IAC was changed to an online format. Scientific objectives To decide on its science objectives, the EMM team consulted the Mars Exploration Program Analysis Group, a NASA-led international forum that considers past and current Mars missions and identifies gaps in knowledge to tackle in future Mars missions. The EMM team selected a set of three instruments and a high supersynchronous orbit, to provide a global view of Mars's atmosphere. The EMM orbit has a periapse of about 20,000 km, an apoapse of about 43,000 km and a period of 55 hours. This orbit was selected with the goal of studying the atmosphere daily and through seasonal cycles, weather events in the lower atmosphere such as dust storms, and comparing weather at different geographic areas of Mars. According to the Hope Mars Mission team, the probe will be the "first true weather satellite" at Mars. The Hope probe will study the atmospheric layers of Mars in detail and will provide data to study: the reason for a drastic climatic change in the Martian atmosphere from the time it could sustain liquid water to today, when the atmosphere is so thin water can exist only as ice or vapour, to help understand how and why Mars is losing its hydrogen and oxygen into space, and the connection between the upper and lower levels of the Martian atmosphere. Data from the Hope probe will also help model Earth's atmosphere and study its evolution over millions of years. All data gained from the mission will be made available to 200 universities and research institutes across the globe for the purpose of knowledge sharing. In April 2023, The New York Times reported an updated global map of Mars based on images from the Hope spacecraft. During a fly-by performed on March 10 2023, the first-ever close-up global images of the Martian moon Deimos were released, taken by the Mars Hope orbiter. Hope spacecraft The robotic probe sent to Mars under the Emirates Mars Mission has been named "Hope" or Al-Amal (Arabic: الأمل), as it is intended to send out a message of optimism to millions of Arabs across the globe and encourage them towards innovation. In April 2015, Sheikh Mohammed bin Rashid invited the Arab world to name the probe. The name was selected after thousands of suggestions were received, as it describes the core objective of the mission. The name of the probe was announced in May 2015 and since then the mission is sometimes referred to as the "Hope Mars Mission". The spacecraft was assembled at LASP in Boulder, Colorado, where Emirati engineers worked and learned from their American counterparts. It was launched from Tanegashima Space Center in Japan. The probe arrived at the launch site in Japan in April 2020, after officials navigated coronavirus-related quarantine protocols and travel restrictions. However, the coronavirus forced officials to shuffle the schedule, and mission managers decided to send the probe to Japan earlier. The decision to ship the spacecraft to the launch site forced engineers in Dubai to curtail some of the planned testings on the probe, but all critical checks were completed before the orbiter left for Japan in April 2020. The officials dispatched 11 engineers and technicians in early April to Japan, where they spent two weeks in quarantine to ensure they had no symptoms of the COVID-19 viral disease. On 20 April 2020, the Hope spacecraft left MBRSC in Dubai to begin the four-day journey to Tanegashima. Packaged inside a climate-controlled shipping container, the spacecraft was transported in a Russian-operated, Ukrainian-built Antonov An-124 cargo plane from Dubai to Nagoya, Japan. The final phase of the journey occurred aboard a ship, which carried the probe from Nagoya to Tanegashima Island on 24 April 2020. Six members of the Emirates Mars Mission team accompanied the spacecraft to Japan. Once there, they began their own two-week quarantine period as mandated by the Japanese government. When they complete the quarantine period, the personnel join the 11 engineers and technicians to complete final testing on the spacecraft inside a payload processing facility clean room at Tanegashima. The Hope probe is built from aluminium in a honeycomb structure with a composite face-sheet. With a mass of 1,350 kg (2,980 lb) including the propellant, the overall size and dimensions of the probe is comparable to a small car. For the purpose of communication, the probe uses a high-gain antenna 1.85 m (6 ft 1 in) in diameter. This antenna produces a narrow radio-wave that must point towards Earth. There are low-gain antennas in the structure of the probe for directional communication at lower bandwidth. Star trackers are used for position determination in space by studying the constellations in relation to the Sun. Hope is equipped with six 120 N (27 lbf) thrusters and eight 5 N (1.1 lbf) reaction control system (RCS) thrusters. The function of the six delta-v thrusters is velocity management, while the RCS thrusters are used for attitude control and delicate maneuvering. The reaction wheels within the probe allow it to reorient itself while traveling through space, helping it point its antenna towards Earth or point any scientific instrument towards Mars. Instruments To achieve the scientific objectives of the mission, the Hope probe is equipped with three scientific instruments: Launch window The rocket was launched during a brief launch window starting on 14 July 2020. The spacecraft was launched on 19 July 2020 from the Tanegashima Space Center in Japan using a Mitsubishi Heavy Industries H-IIA launch vehicle, and it arrived at Mars on 9 February 2021. Guidance and navigation KinetX Aerospace, based in Tempe, Arizona, are providing navigation services for the mission. NASA's Deep Space Network (DSN) is being used to communicate with and track the spacecraft. KinetX uses the radio tracking data provided by the DSN to estimate the spacecraft's trajectory and design the maneuvers necessary to keep Hope on its planned trajectory and insert into Mars orbit. Mission design Advanced Space, based in Boulder, Colorado, is providing mission design services for the mission. Advanced Space created the reference trajectory, reference maneuvers, and science events list. They also provide verification for all maneuvers as well as the launch targets. Team The mission team is divided into seven groups including Spacecraft, Logistics, Mission Operations, Project Management, Science Education and Outreach, Ground Station, and Launch Vehicle. The team is headed by Omran Sharaf, who acts as the project manager and is responsible for managing and supporting the ongoing tasks related to the Emirates Mars Mission. Sarah Amiri is the deputy project manager and the lead science investigator, who leads the team in developing the mission's objectives and aligning programmes related to the instrumentation of the Hope probe. The mission has been referred to as having the potential to make a lasting contribution to the economy and people of the United Arab Emirates. The mission team includes 150 Emirati engineers and 200 engineers and scientists at partner institutes in the United States, with Omran Sharaf as the project director; Pete Withnell as the program manager; Sarah Amiri, deputy program manager and the lead science investigator; Ibrahim Hamza Al Qasim, deputy project manager, strategic planning; and Zakareyya Al Shamsi, deputy project manager for the operations. Indian Space Research Organisation (ISRO) held meetings with the mission team and shared their experience and assisted in their launch of the Mars mission. Trajectory corrections and arrival The UAE's Hope Mars orbiter successfully executed its first interplanetary course correction maneuver (TCM1), mission officials announced 17 August 2020. The orbiter arrived at Mars on 9 February 2021; around 19:42 Gulf Standard Time (UTC+04:00), the craft started firing its thrusters to insert itself into Mars's orbit, a process that took about 27 minutes of thrust burn to complete. The craft then entered radio silence as it swung around Mars, but reported it had successfully entered orbit about 15 minutes later. See also References External links |
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Contents United Arab Emirates in the Arabian Peninsula The United Arab Emirates[b] (UAE), also known simply as the Emirates,[c] is a country in West Asia, situated at the eastern end of the Arabian Peninsula. It is a federal semi-constitutional monarchy made up of seven emirates, with Abu Dhabi serving as its national capital. The UAE borders Oman to the east and northeast, and Saudi Arabia to the southwest; it shares maritime borders with Qatar and Iran in the Persian Gulf, and with Oman in the Gulf of Oman. As of 2024[update], the UAE has an estimated population of over 10 million; Dubai is the country's largest city. Islam is the state religion and Arabic is the official language while English remains the most spoken language and the language of business. The present-day United Arab Emirates is located within the historical region of Eastern Arabia, which was oriented to maritime trade and seafaring. The Portuguese arrived in the region around 1500 and set up bases on the territory while waging wars against the Persians. After their expulsion,[when?] the Dutch controlled the straits and established global maritime dominance. By the 19th century, with pearling becoming a major economic activity, piracy became rampant in the gulf, prompting British intervention; local sheikhdoms formed a pact with the United Kingdom to create the Trucial States, a British protectorate that was effectively shielded from attempted Saudi and Omani suzerainty. The Trucial States remained under British influence until full independence as the United Arab Emirates in 1971. Zayed bin Sultan Al Nahyan, ruler of Abu Dhabi and the country's first president (1971–2004), oversaw rapid development of the Emirates by investing revenues from newly found oil into healthcare, education, and infrastructure. The UAE is considered a middle power in global affairs; Dubai serves as an international hub of finance, tourism, and commerce. Only 11% of the population are native Emiratis; the vast majority of inhabitants are expatriates and migrant workers, most of whom are from South Asia. The United Arab Emirates has the world's seventh-largest oil reserves and seventh-largest natural gas reserves. The country has the most diversified economy among the members of the Gulf Cooperation Council (GCC), having become less reliant on natural resources in the 21st century and increasingly focusing on tourism and business. The UAE is a member of the United Nations, Arab League, Organisation of Islamic Cooperation, OPEC, Non-Aligned Movement, World Trade Organization, and BRICS; it is also a dialogue partner of the Shanghai Cooperation Organisation. The Federal Supreme Council, made up of the seven ruling emirs, is the highest state authority; it jointly appoints one member as federal president, who appoints a prime minister, who in turn forms and leads the cabinet. The UAE is an authoritarian state but generally liberal by regional standards. It ranks highly in several social indicators such as housing, healthcare, education and personal safety, as well as the highest regionally in the Human Development Index. Human rights organisations consider the UAE substandard on human rights, ranking low in the human freedom index due to reports of government critics being imprisoned and tortured, families harassed by the state security apparatus, and cases of forced disappearances. Individual rights such as the freedoms of assembly, association, expression, and the freedom of the press are severely repressed. Etymology The United Arab Emirates is named after the seven emirates that formed a federation: the Emirate of Abu Dhabi, the Emirate of Dubai, the Emirate of Ajman, the Emirate of Sharjah, the Emirate of Ras Al Khaimah, the Emirate of Umm Al Quwain, and the Emirate of Fujairah. History Stone tools recovered reveal a settlement of people from Africa some 127,000 years ago and a stone tool used for butchering animals discovered on the Arabian coast suggests an even older habitation from 130,000 years ago. In time, lively trading links developed with civilisations in Mesopotamia, Iran, and the Harappan culture of the Indus Valley. This contact persisted and became wider, probably motivated by the trade in copper from the Hajar Mountains, which commenced around 3,000 BCE. Sumerian sources talk of the Magan civilisation, which has been identified as encompassing the modern UAE and Oman. There are six periods of human settlement with distinctive behaviours in the region before Islam, which include the Hafit period from 3,200 to 2,600 BCE, the Umm Al Nar culture from 2,600 to 2,000 BCE, and the Wadi Suq culture from 2,000 to 1,300 BCE. From 1,200 BCE to the advent of Islam in Eastern Arabia, through three distinctive Iron Ages and the Mleiha period, the area was variously occupied by the Achaemenids and other forces, and saw the construction of fortified settlements and extensive husbandry thanks to the development of the falaj irrigation system. The spread of Islam to the northeastern tip of the Arabian Peninsula is thought to have followed directly from a letter sent by the Islamic prophet Muhammad to the rulers of Oman in 630 CE. This led to a group of rulers travelling to Medina, converting to Islam, and subsequently driving a successful uprising against the unpopular Sassanids, who dominated the coast at the time. Following the death of Muhammad, the new Islamic communities south of the Persian Gulf threatened to disintegrate, with insurrections against the Muslim leaders. Caliph Abu Bakr sent an army from the capital Medina which completed its reconquest of the territory (the Ridda Wars) with the Battle of Dibba in which 10,000 lives are thought to have been lost. This assured the integrity of the Caliphate and the unification of the Arabian Peninsula under the newly emerging Rashidun Caliphate. In 637, Julfar (in the area of today's Ras Al Khaimah) was an important port that was used as a staging post for the Islamic invasion of the Sasanian Empire. The area of the Al Ain/Buraimi Oasis was known as Tu'am and was an important trading post for camel routes between the coast and the Arabian interior. The earliest Christian site in the UAE was first discovered in the 1990s, an extensive monastic complex on what is now known as Sir Bani Yas Island and which dates back to the seventh century. Thought to be Nestorian and built in 600 CE, the church appears to have been abandoned peacefully in 750 CE. It forms a rare physical link to a legacy of Christianity, which is thought to have spread across the peninsula from 50 to 350 CE following trade routes. Certainly, by the fifth century, Oman had a bishop named John – the last bishop of Oman being Etienne, in 676 CE. The harsh desert environment led to the emergence of the "versatile tribesman", nomadic groups who subsisted due to a variety of economic activities, including animal husbandry, agriculture, and hunting. The seasonal movements of these groups led not only to frequent clashes between groups but also to the establishment of seasonal and semi-seasonal settlements and centres. These formed tribal groupings whose names are still carried by modern Emiratis, including the Bani Yas and Al Bu Falah of Abu Dhabi, Al Ain, Liwa, and the west coast; the Dhawahir, Awamir, Al Ali, and Manasir of the interior; the Sharqiyin of the east coast; and the Qawasim to the north. With the expansion of European colonial empires, Portuguese, English, and Dutch forces appeared in the Persian Gulf region. By the 18th century, the Bani Yas confederation was the dominant force in most of the area now known as Abu Dhabi, while the Northern Al Qawasim (Al Qasimi) dominated maritime commerce. The Portuguese maintained an influence over the coastal settlements, building forts in the wake of the bloody 16th-century conquests of coastal communities by Albuquerque and the Portuguese commanders who followed him – particularly on the east coast at Muscat, Sohar, and Khor Fakkan. The southern coast of the Persian Gulf was known to the British as the "Pirate Coast", as boats of the Al Qawasim federation harassed British-flagged shipping from the 17th century into the 19th. The charge of piracy is disputed by modern Emirati historians, including the current ruler of Sharjah, Sheikh Sultan Al Qasimi, in his 1986 book The Myth of Arab Piracy in the Gulf. British expeditions to protect their Indian trade routes led to campaigns against Ras Al Khaimah and other harbours along the coast, including the Persian Gulf campaign of 1809 and the more successful campaign of 1819. The following year, Britain and a number of local rulers signed a maritime truce, giving rise to the term Trucial States, which came to define the status of the coastal emirates. A further treaty was signed in 1843 and in 1853, the Perpetual Maritime Truce was agreed. To this was added the 'Exclusive Agreements', signed in 1892, which made the Trucial States a British protectorate. Under the 1892 treaty, the trucial sheikhs agreed not to dispose of any territory except to the British and not to enter into relationships with any foreign government other than the British without their consent. In return, the British promised to protect the Trucial Coast from all aggression by sea and to help in case of land attack. British maritime policing meant that pearling fleets could operate in relative security. However, the British prohibition of the slave trade meant an important source of income was lost to some sheikhs and merchants. In 1869, the Qubaisat tribe settled at Khor Al Adaid and tried to enlist the support of the Ottomans. Khor Al Adaid was claimed by Abu Dhabi at that time, a claim supported by the British. In 1906, the British Political Resident, Percy Cox, confirmed in writing to the ruler of Abu Dhabi, Zayed bin Khalifa Al Nahyan ('Zayed the Great'), that Khor Al Adaid belonged to his sheikhdom. During the 19th and early 20th centuries, the pearling industry thrived, providing both income and employment to the people of the Persian Gulf. The First World War had a severe impact on the industry, but it was the economic depression of the late 1920s and early 1930s, coupled with the invention of the cultured pearl, that wiped out the trade. The remnants of the trade eventually faded away shortly after the Second World War, when the newly independent Government of India imposed heavy taxation on imported pearls. The decline of pearling resulted in extreme economic hardship in the Trucial States. In 1922, the British government secured undertakings from the rulers of the Trucial States not to sign concessions with foreign companies without their consent. Aware of the potential for the development of natural resources such as oil, following finds in Persia (from 1908) and Mesopotamia (from 1927), a British-led oil company, the Iraq Petroleum Company (IPC), showed an interest in the region. The Anglo-Persian Oil Company (APOC, later to become British Petroleum, or BP) had a 23.75% share in IPC. From 1935, onshore concessions to explore for oil were granted by local rulers, with APOC signing the first one on behalf of Petroleum Concessions Ltd (PCL), an associate company of IPC. APOC was prevented from developing the region alone because of the restrictions of the Red Line Agreement, which required it to operate through IPC. A number of options between PCL and the trucial rulers were signed, providing useful revenue for communities experiencing poverty following the collapse of the pearl trade. However, the wealth of oil which the rulers could see from the revenues accruing to surrounding countries remained elusive. The first bore holes in Abu Dhabi were drilled by IPC's operating company, Petroleum Development (Trucial Coast) Ltd (PDTC) at Ras Sadr in 1950, with a 13,000-foot-deep (4,000-metre) bore hole taking a year to drill and turning out dry, at the tremendous cost at the time of £1 million. The British set up a development office that helped in some small developments in the emirates. The seven sheikhs of the emirates then decided to form a council to coordinate matters between them and took over the development office. In 1952, they formed the Trucial States Council, and appointed Adi Al Bitar, Dubai's Sheikh Rashid bin Saeed Al Maktoum's legal advisor, as secretary general and legal advisor to the council. The council was terminated once the United Arab Emirates was formed. The tribal nature of society and the lack of definition of borders between emirates frequently led to disputes, settled either through mediation or, more rarely, force. The Trucial Oman Scouts was a small military force used by the British to keep the peace. In 1953, a subsidiary of BP, D'Arcy Exploration Ltd, obtained an offshore concession from the ruler of Abu Dhabi. BP joined with Compagnie Française des Pétroles (later Total) to form operating companies, Abu Dhabi Marine Areas Ltd (ADMA) and Dubai Marine Areas Ltd (DUMA). A number of undersea oil surveys were carried out, including one led by the famous marine explorer Jacques Cousteau. In 1958, a floating platform rig was towed from Hamburg, Germany, and positioned over the Umm Shaif pearl bed, in Abu Dhabi waters, where drilling began. In March, it struck oil in the Upper Thamama rock formation. This was the first commercial discovery of the Trucial Coast, leading to the first exports of oil in 1962. ADMA made further offshore discoveries at Zakum and elsewhere, and other companies made commercial finds such as the Fateh oilfield off Dubai and the Mubarak field off Sharjah (shared with Iran). Meanwhile, onshore exploration was hindered by territorial disputes. In 1955, the United Kingdom represented Abu Dhabi and Oman in their dispute with Saudi Arabia over the Buraimi Oasis. A 1974 agreement between Abu Dhabi and Saudi Arabia seemed to have settled the Abu Dhabi-Saudi border dispute, but this has not been ratified. The UAE's border with Oman was ratified in 2008. PDTC continued its onshore exploration away from the disputed area, drilling five more bore holes that were also dry. However, on 27 October 1960, the company discovered oil in commercial quantities at the Murban No. 3 well on the coast near Tarif. In 1962, PDTC became the Abu Dhabi Petroleum Company. As oil revenues increased, the ruler of Abu Dhabi, Zayed bin Sultan Al Nahyan, undertook a massive construction program, building schools, housing, hospitals, and roads. When Dubai's oil exports commenced in 1969, Sheikh Rashid bin Saeed Al Maktoum, the ruler of Dubai, was able to invest the revenues from the limited reserves found to spark the diversification drive that would create the modern global city of Dubai. By 1966, it had become clear that the British government could no longer afford to administer and protect the Trucial States, what is now the United Arab Emirates. British Members of Parliament (MPs) debated the preparedness of the Royal Navy to defend the sheikhdoms. On 24 January 1968, British Prime Minister Harold Wilson announced the government's decision, reaffirmed in March 1971 by Prime Minister Edward Heath, to end the treaty relationships with the seven trucial sheikhdoms. Days after the announcement, the ruler of Abu Dhabi, Sheikh Zayed bin Sultan Al Nahyan, fearing vulnerability, tried to persuade the British to honour the protection treaties by offering to pay the full costs of keeping the British Armed Forces in the Emirates. The British Conservative government rejected the offer. After Labour MP Goronwy Roberts informed Sheikh Zayed of the news of British withdrawal, the nine Persian Gulf sheikhdoms attempted to form a union of Arab emirates, but by mid-1971 they were still unable to agree on terms of union even though the British treaty relationship was to expire in December of that year. Fears of vulnerability were realised the day before independence. An Iranian destroyer group broke formation from an exercise in the lower Gulf, sailing to the Tunb islands. On 30 November 1971 the islands were taken by force, civilians and Arab defenders alike allowed to flee. Two British warships, the aircraft carrier HMS Eagle and the HMS Albion, stood idle during the course of the invasion. A destroyer group approached the island of Abu Musa as well. But there, Sheikh Khalid bin Muhammad Al Qasimi had already negotiated with the Iranian shah, and the island was quickly leased to Iran for $3 million a year. Meanwhile, Saudi Arabia laid claim to swathes of Abu Dhabi. It was not until 1974 that a border agreement was signed with Saudi Arabia, formally demarcating the frontiers between the UAE and Saudi Arabia. The UAE's sense of threat from Iran influenced its financial support for Iraq during the Iran–Iraq War. Originally intended to be part of the proposed Federation of Arab Emirates, Bahrain became independent in August, and Qatar in September 1971. When the British-Trucial Sheikhdoms treaty expired on 1 December 1971, both emirates became fully independent. On 2 December 1971, six of the emirates (Abu Dhabi, Ajman, Dubai, Fujairah, Sharjah, and Umm Al Quwain) agreed to enter into a union named the United Arab Emirates. Ras al-Khaimah joined later, on 10 January 1972. In February 1972, the Federal National Council (FNC) was created; it was a 40-member consultative body appointed by the seven rulers. The UAE joined the Arab League on 6 December 1971 and the United Nations on 9 December. It was a founding member of the Gulf Cooperation Council in May 1981, with Abu Dhabi hosting the first GCC summit. The founding fathers of the United Arab Emirates were: Zayed bin Sultan Al Nahyan of Abu Dhabi; Rashid bin Saeed Al Maktoum of Dubai; Khalid bin Muhammad Al Qasimi of Sharjah; Rashid bin Humaid Al Nuaimi of Ajman; Ahmad bin Rashid Al Mualla of Umm Al Quwain; Saqr bin Mohammed Al Qasimi of Ras Al Khaimah and Mohammed bin Hamad Al Sharqi of Fujairah. The UAE supported military operations by the US and other coalition states engaged in the Gulf War against Saddam Hussein in Ba'athist Iraq (1991), as well as operations supporting the global war on terror for the Horn of Africa at Al Dhafra Air Base located outside of Abu Dhabi. The air base also supported Allied operations during the 1991 Persian Gulf War and Operation Northern Watch. The country had already signed a military defence agreement with the U.S. in 1994 and one with France in 1995. In January 2008, France and the UAE signed a deal allowing France to set up a permanent military base in the emirate of Abu Dhabi. The UAE joined international military operations in Libya in March 2011. On 2 November 2004, the UAE's first president, Sheikh Zayed bin Sultan Al Nahyan, died. Sheikh Khalifa bin Zayed Al Nahyan was elected as the president of the UAE. Sheikh Mohammed bin Zayed Al Nahyan succeeded Sheikh Khalifa as crown prince of Abu Dhabi. In January 2006, Sheikh Maktoum bin Rashid Al Maktoum, the prime minister of the UAE and the ruler of Dubai, died, and Sheikh Mohammed bin Rashid Al Maktoum assumed both roles. The first ever national elections were held on 16 December 2006. A number of voters chose half of the members of the Federal National Council. The UAE has largely escaped the Arab Spring, which other countries have experienced; however, 60 Emirati activists from Al Islah were apprehended for an alleged coup attempt and the attempt of the establishment of an Islamist state in the UAE. Mindful of the protests in nearby Bahrain, in November 2012 the UAE outlawed online mockery of its government or attempts to organise public protests through social media. On 29 January 2020, the COVID-19 pandemic was confirmed to have reached the UAE. Two months later, in March, the government announced the closure of shopping malls, schools, and places of worship, in addition to imposing a 24-hour curfew, and suspending all Emirates passenger flights. This resulted in a major economic downturn, which eventually led to the merger of more than 50% of the UAE's federal agencies. On 29 August 2020, the UAE established normal diplomatic relations with Israel and with the help of the United States, they signed the Abraham Accords with Bahrain. On 9 February 2021, the UAE achieved a historic milestone when its probe, named Hope, successfully reached Mars's orbit. The UAE became the first country in the Arab world to reach Mars, the fifth country to successfully reach Mars, and the second country, after an Indian probe, to orbit Mars on its maiden attempt. On 14 May 2022, Sheikh Mohamed bin Zayed Al Nahyan was elected as the UAE's new president after the death of Sheikh Khalifa bin Zayed Al Nahyan. Geography The United Arab Emirates is situated in the Middle East, bordering the Gulf of Oman and the Persian Gulf, between Oman and Saudi Arabia; it is in a strategic location slightly south of the Strait of Hormuz, a vital transit point for world crude oil. The UAE lies between 22°30' and 26°10' north latitude and between 51° and 56°25′ east longitude. It shares a 530-kilometre (330 mi) border with Saudi Arabia on the west, south, and southeast, and a 450-kilometre (280 mi) border with Oman on the southeast and northeast. The land border with Qatar in the Khor Al Adaid area is about nineteen kilometres (12 miles) in the northwest; however, it is a source of ongoing dispute. Following Britain's military departure from the UAE in 1971, and its establishment as a new state, the UAE laid claim to Iranian-occupied islands of Abu Musa and the Greater and the Lesser Tunbs, when Iran captured them during the British rule, resulting in disputes with Iran that remain unresolved. The UAE also disputes claim on other islands against the neighbouring state of Qatar. The largest emirate, Abu Dhabi, accounts for 87% of the UAE's total area, 67,340 square kilometres (26,000 sq mi). The smallest emirate, Ajman, encompasses only 259 km2 (100 sq mi). The UAE coast stretches for nearly 650 km (404 mi) along the southern shore of the Persian Gulf, briefly interrupted by an isolated outcrop of the Sultanate of Oman. Six of the emirates are situated along the Persian Gulf, and the seventh, Fujairah, is on the eastern coast of the peninsula with direct access to the Gulf of Oman. Most of the coast consists of salt pans that extend 8–10 km (5.0–6.2 mi) inland. The largest natural harbor is at Dubai, although other ports have been dredged at Abu Dhabi, Sharjah, and elsewhere. Numerous islands are found in the Persian Gulf, and the ownership of some of them has been the subject of international disputes with both Iran and Qatar. The smaller islands, as well as many coral reefs and shifting sandbars, are a menace to navigation. Strong tides and occasional windstorms further complicate ship movements near the shore. The UAE also has a stretch of the Al Bāţinah coast of the Gulf of Oman. The Musandam Peninsula, the very tip of Arabia by the Strait of Hormuz, and Madha are exclaves of Oman separated by the UAE. South and west of Abu Dhabi, vast, rolling sand dunes merge into the Rub al-Khali (Empty Quarter) of Saudi Arabia. The desert area of Abu Dhabi includes two important oases with adequate underground water for permanent settlements and cultivation. The extensive Liwa Oasis is in the south near the undefined border with Saudi Arabia. About 100 km (62 mi) to the northeast of Liwa is the Al-Buraimi oasis, which extends on both sides of the Abu Dhabi-Oman border. Lake Zakher in Al Ain is a human-made lake near the border with Oman that was created from treated waste water. Prior to withdrawing from the area in 1971, Britain delineated the internal borders among the seven emirates in order to preempt territorial disputes that might hamper formation of the federation. In general, the rulers of the emirates accepted the British interventions, but in the case of boundary disputes between Abu Dhabi and Dubai, and also between Dubai and Sharjah, conflicting claims were not resolved until after the UAE became independent. The most complicated borders were in the Western Hajar Mountains, where five of the emirates contested jurisdiction over more than a dozen enclaves. The UAE contains the following terrestrial ecoregions: Al Hajar montane woodlands and shrublands, Gulf of Oman desert and semi-desert, and Al-Hajar foothill xeric woodlands and shrublands. The oases grow date palms, acacia, and eucalyptus trees. In the desert, the flora is very sparse and consists of grasses and thorn bushes. The indigenous fauna had come close to extinction because of intensive hunting, which has led to a conservation program on Sir Bani Yas Island initiated by Sheikh Zayed bin Sultan Al Nahyan in the 1970s, resulting in the survival of, for example, Arabian Oryx, Arabian camel, and leopards. Coastal fish and mammals consist mainly of mackerel, perch, and tuna, as well as sharks and whales. The climate of the UAE is subtropical-arid with hot summers and warm winters. The climate is categorised as desert climate. The hottest months are July and August, when average maximum temperatures reach above 45 °C (113 °F) on the coastal plain. In the Hajar Mountains, temperatures are considerably lower, a result of increased elevation. Average minimum temperatures in January and February are between 10 and 14 °C (50 and 57 °F). During the late summer months, a humid southeastern wind known as Sharqi (i.e. "Easterner") makes the coastal region especially unpleasant. The average annual rainfall in the coastal area is less than 120 mm (4.7 in), but in some mountainous areas annual rainfall often reaches 350 mm (13.8 in). Rain in the coastal region falls in short, torrential bursts during the winter months, sometimes resulting in floods in ordinarily dry wadi beds. The region is prone to occasional, violent dust storms, which can severely reduce visibility. On 28 December 2004, snow was recorded in the UAE for the first time, in the Jebel Jais mountain cluster in Ras al-Khaimah. A few years later, there were more sightings of snow and hail. The Jebel Jais mountain cluster has experienced snow only twice since records began. Government and politics The United Arab Emirates is a federal semi-presidential state under a semi-constitutional monarchy made up of seven hereditary tribal monarchy-styled political units called Sheikhdoms. It is governed by a Federal Supreme Council made up of the ruling Sheikhs of Abu Dhabi, Ajman, Fujairah, Sharjah, Dubai, Ras Al Khaimah, and Umm Al Quwain. All responsibilities not granted to the federal government are reserved to the individual emirate. A percentage[quantify] of revenues from each emirate is allocated to the UAE's central budget. The UAE uses the title Sheikh instead of Emir to refer to the rulers of individual emirates. The title is used due to the sheikhdom-styled governing system in adherence to the culture of tribes of Arabia, where Sheikh means leader, elder, or the tribal chief of the clan who partakes in shared decision making with his followers. The president and vice president are elected by the Federal Supreme Council. Usually, the Head of the Al Nahyan family, who are based in Abu Dhabi, holds the presidency and the Head of the Al Maktoum family, based in Dubai, the prime ministership. All prime ministers but one have served concurrently as vice president. The federal government is composed of three branches: The UAE e-Government is the extension of the UAE federal government in its electronic form. The UAE's Council of Ministers (Arabic: مجلس الوزراء) is the chief executive branch of the government presided over by the prime minister. The prime minister, who is appointed by the Federal Supreme Council, appoints the ministers. The Council of Ministers is made up of 22 members and manages all internal and foreign affairs of the federation under its constitutional and federal law. In December 2019, the UAE became the only Arab country, and one of only five countries in the world, to attain gender parity in a national legislative body, with its lower house being 50 percent women. The UAE is the only country in the world that has a Ministry of Tolerance, a Ministry of Happiness, and a Ministry of Artificial Intelligence. The UAE also has a virtual ministry called the Ministry of Possibilities, designed to find solutions to challenges and improve quality of life. The UAE also has a National Youth Council, which is represented in the UAE cabinet by the Minister of Youth. The UAE legislative body is the Federal National Council which convenes nationwide elections every four years. The FNC consists of 40 members drawn from all the emirates. Each emirate is allocated specific seats to ensure full representation. Half are appointed by the rulers of the constituent emirates, and the other half are elected by a small percentage of Emirati citizens, currently 33%, hand-picked by the rulers of each emirate. By law, the council members have to be equally divided between males and females. The FNC is restricted to a largely consultative role. The UAE is an authoritarian federal monarchy. The UAE has been described as a "tribal autocracy" where the seven constituent monarchies are led by tribal rulers in an autocratic fashion. There are no democratically elected institutions, and there is no formal commitment to free speech. According to human rights organizations, there are systematic human rights violations, including the torture and forced disappearance of government critics. The UAE ranks poorly in freedom indices measuring civil liberties and political rights. The UAE has consistently ranked poorly across a number of freedom indices, including being ranked as "Not Free" in Freedom House's annual Freedom in the World report from 1999 to present day, ranks poorly in the annual Reporters without Borders' Press Freedom Index, International IDEA's Global State of Democracy (GSoD) Indices, the Democracy Tracker, and the Bertelsmann Transformation Index - which describes the UAE as a "moderate monarchy". The country was ranked 91 out of 137 states and is far below the average scoring for development towards a democracy, and is the third least democratic country in the Middle East. The country, by all measurements is not democratic, with particular weaknesses in political representation, including inclusive suffrage and credible elections. The United Arab Emirates comprises seven emirates. The Emirate of Dubai is the most populous emirate with 35.6% of the UAE population. The Emirate of Abu Dhabi has 31.2%, meaning that over two-thirds of the UAE population lives in either Abu Dhabi or Dubai. Abu Dhabi has an area of 67,340 square kilometres (26,000 square miles), which is 86.7% of the country's total area, excluding the islands. It has a coastline extending for more than 400 km (250 mi) and is divided for administrative purposes into three major regions. The Emirate of Dubai extends along the Persian Gulf coast of the UAE for approximately 72 km (45 mi). Dubai has an area of 3,885 square kilometres (1,500 square miles), which is equivalent to 5% of the country's total area, excluding the islands. The Emirate of Sharjah extends along approximately 16 km (10 mi) of the UAE's Persian Gulf coastline and for more than 80 km (50 mi) into the interior. The northern emirates which include Fujairah, Ajman, Ras al-Khaimah, and Umm al-Qaiwain all have a total area of 3,881 square kilometres (1,498 square miles). There are two areas under joint control. One is jointly controlled by Oman and Ajman, the other by Fujairah and Sharjah. There is an Omani exclave surrounded by UAE territory, known as Wadi Madha. It is located halfway between the Musandam peninsula and the rest of Oman in the Emirate of Sharjah. It covers approximately 75 square kilometres (29 square miles) and the boundary was settled in 1969. The north-east corner of Madha is closest to the Khor Fakkan-Fujairah road, barely 10 metres (33 feet) away. Within the Omani exclave of Madha, is a UAE exclave called Nahwa, also belonging to the Emirate of Sharjah. It is about eight kilometres (5.0 miles) on a dirt track west of the town of New Madha. It consists of about forty houses with its own clinic and telephone exchange. The United Arab Emirates has broad diplomatic and commercial relations with most countries and members of the United Nations, despite significant human rights abuses. It plays a significant role in OPEC, and is one of the founding members of the Gulf Cooperation Council (GCC). The UAE is a member of the United Nations and several of its specialised agencies (ICAO, ILO, UPU, WHO, WIPO), as well as the World Bank, IMF, Arab League, Organisation of Islamic Cooperation (OIC), and the Non-Aligned Movement. Also, it is an observer in the Organisation Internationale de la Francophonie. Most countries have diplomatic missions in the capital Abu Dhabi with most consulates being in UAE's largest city, Dubai. Emirati foreign relations are motivated to a large extent by identity and relationship to the Arab world. The United Arab Emirates has strong ties with Bahrain, China, Egypt, India, Jordan, Pakistan, Russia, Saudi Arabia, and the United States. Following the British withdrawal from the UAE in 1971 and the establishment of the UAE as a state, the UAE disputed rights to three islands in the Persian Gulf against Iran, namely Abu Musa, Greater Tunb, and Lesser Tunb. The UAE tried to bring the matter to the International Court of Justice, but Iran dismissed the notion. Pakistan was the first country to formally recognise the UAE upon its formation. The UAE alongside multiple Middle Eastern and African countries cut diplomatic ties with Qatar in June 2017 due to allegations of Qatar being a state sponsor of terrorism, resulting in the Qatar diplomatic crisis. Ties were restored in January 2021. The UAE recognised Israel in August 2020, reaching a historic Israel–United Arab Emirates peace agreement and leading towards full normalisation of relations between the two countries. Gulf Arab states, including the United Arab Emirates, showed interest in engaging with the Syrian transitional government to promote political transition and address regional concerns following the fall of the Assad regime. Additionally, the UAE leadership see the change in Syria as an opportunity to undermine Iranian influence in the Levant. The hope is to help push Iran out of Syria and cut its pathways between Iraq and Lebanon. The UAE is the primary supporter of the rebel Rapid Support Forces (RSF) in the ongoing Sudanese Civil War. In 2025, multiple reports exposed the UAE for supplying the RSF with weapons, in violation of international sanctions, and used to commit genocide in the region. On 6 March 2025, Sudan filed a case against the UAE at the International Court of Justice, accusing the UAE of complicity in genocide by supporting the RSF, which are alleged to have committed atrocities against the Masalit people in Darfur. In late 2025, the fall of El Fasher to the RSF led to widespread massacres and intensified global scrutiny of the UAE for its role in supporting the paramilitary group. Joining US Senator Chris Van Hollen, United States Congress has pushed for an export ban of weapons to the UAE. As of November 2025, the bill remained in Congress. The armed forces of the United Arab Emirates consist of 44,000 active personnel in the Army, 2,500 personnel and 46 ships in the Navy, 4,500 personnel and 386 aircraft in the Air Force, and 12,000 personnel in the Presidential Guard. In 2022 the country spent US$20.4 billion on defense, which is 4% of its GDP. The UAE is considered to have the most capable military among the Gulf states. Although initially small in number, the UAE armed forces have grown significantly over the years and are presently equipped with some of the most modern weapon systems, purchased from a variety of western military advanced countries, mainly France, the US, and the UK. Most officers are graduates of the United Kingdom's Royal Military Academy at Sandhurst, with others having attended the United States Military Academy at West Point, the Royal Military College, Duntroon in Australia, and St Cyr, the military academy of France. France and the United States have played the most strategically significant roles with defence cooperation agreements and military material provision. Some of the UAE military deployments include an infantry battalion to the United Nations UNOSOM II force in Somalia in 1993, the 35th Mechanised Infantry Battalion to Kosovo, a regiment to Kuwait during the Iraq War, demining operations in Lebanon, Operation Enduring Freedom in Afghanistan, American-led intervention in Libya, American-led intervention in Syria, and the Saudi-led intervention in Yemen. The active and effective military role, despite its small active personnel, has led the UAE military to be nicknamed as "Little Sparta" by United States Armed Forces Generals and former US defense secretary James Mattis. The UAE intervened in the Libyan Civil War in support of General Khalifa Haftar's Libyan National Army in its conflict with the internationally recognised Government of National Accord (GNA). Examples of the military assets deployed include the enforcement of the no-fly-zone over Libya by sending six UAEAF F-16 and six Mirage 2000 multi-role fighter aircraft, ground troop deployment in Afghanistan, 30 UAEAF F-16s and ground troops deployment in Southern Yemen, and helping the US launch its first airstrikes against ISIL targets in Syria. The UAE has begun production of a greater amount of military equipment, in a bid to reduce foreign dependence and help with national industrialisation. Example of national military development include the Abu Dhabi Shipbuilding company (ADSB), which produces a range of ships and is a prime contractor in the Baynunah Programme, a programme to design, develop, and produce corvettes customised for operation in the shallow waters of the Persian Gulf. The UAE is also producing weapons and ammunition through Caracal International, military transport vehicles through Nimr LLC, and unmanned aerial vehicles collectively through Emirates Defence Industries Company. The UAE operates the General Dynamics F-16 Fighting Falcon F-16E Block 60 unique variant unofficially called "Desert Falcon", developed by General Dynamics in collaboration with the UAE and specifically for the United Arab Emirates Air Force. The United Arab Emirates Army operates a customised Leclerc tank and is the only other operator of the tank aside from the French Army. The largest defence exhibition and conference in the Middle East, International Defence Exhibition, takes place biennially in Abu Dhabi. The UAE introduced a mandatory military service for adult males, since 2014, for 16 months to expand its reserve force. The highest loss of life in the history of UAE military occurred on Friday 4 September 2015, in which 52 soldiers were killed in Marib area of central Yemen by a Tochka missile which targeted a weapons cache and caused a large explosion. The United Arab Emirates has a federal court system, and the emirates of Abu Dhabi, Dubai, and Ras Al Khaimah also have local court systems. The UAE's judicial system is derived from the civil law system and Sharia law. The court system consists of civil courts and Sharia courts. Sharia courts have exclusive jurisdiction in Muslim family law matters, while civil courts deal with all other legal matters. Since September 2020, corporal punishment is no longer a legal form of punishment under UAE federal law. Under the decree, legal forms of punishment are retribution and blood money payments, capital punishment, life imprisonment, temporary imprisonment, indefinite detention, and fines. Article 1 of the Federal Penal Code was amended in 2020 to state that Islamic Law applies only to retribution and blood money punishments; previously the article stated that "provisions of the Islamic Law shall apply to the crimes of doctrinal punishment, punitive punishment and blood money." Before 2020, flogging, stoning, amputation, and crucifixion were technically legal punishments for criminal offences such as adultery, premarital sex, and drug or alcohol use. In recent history, the UAE has declared its intention to move towards a more tolerant legal code, and to phase out corporal punishment altogether in favour of private punishment. With alcohol and cohabitation laws being loosened in advance of the 2020 World Expo, Emirati laws have become increasingly acceptable to visitors from non-Muslim countries. Sharia courts have exclusive jurisdiction over Muslim family law matters such as marriage, divorce, child custody, and inheritance. Muslim women must receive permission from a male guardian to marry and remarry. This requirement is derived from Sharia law and has been federal law since 2005. It is illegal for Muslim women to marry non-Muslims and is punishable by law. Non-Muslim expatriates were liable to Sharia rulings on marriage, divorce, child custody, and inheritance, however, federal law was changed to introduce non-Sharia personal status law for non-Muslims. Recently, the emirate of Abu Dhabi opened a civil law family court for non-Muslims and Dubai has announced that non-Muslims can opt for civil marriages. Apostasy is a technically capital crime in the UAE, however, there are no documented cases of apostates being executed. Blasphemy is illegal; expatriates involved in insulting Islam are liable for deportation. Sodomy is illegal and is punishable by a minimum of 6-month imprisonment or a fine or both, but the law does not apply "except on the basis of a complaint from the husband or legal guardian", but the penalty may be suspended if the complaint is waived. In 2013, an Emirati man was on trial for being accused of a "gay handshake". Due to local customs, public shows of affection in certain public places are illegal and could result in deportation, but holding hands is tolerated. Expats in Dubai have been deported for kissing in public. In several cases, the courts of the UAE have jailed women who have reported rape.[d] Federal law in the UAE prohibits swearing on social media. Dancing in public is illegal in the UAE. In November 2020, UAE announced that it decriminalised alcohol, lifted the ban on unmarried couples living together, and ended lenient punishment on honor killing. Foreigners living in the Emirates were allowed to follow their native country's laws on divorce and inheritance. Despite the Sharia laws that restrict gambling tools and machines in the UAE, the country granted its first commercial gaming operator's licence to Wynn Resorts that was developing a luxury resort, including a 224,000 ft2 (20,800 m2) casino component, at Al Marjan Island in Ras Al Khaimah. In September 2023, the UAE established the General Commercial Gaming Regulatory Authority (GCGRA), hinting towards its plans to legalise gambling. The GCGRA has outlined a comprehensive framework that includes licenses for casinos, slot machines, and poker tables, as well as lotteries, internet gaming, and sports wagering. The GCGRA emphasises responsible gaming, requiring operators to implement socially responsible gaming programs and undergo audits every two years. These programs include player education, responsible marketing, employee training, and evaluation plans to measure their effectiveness. Gaming operators must have a "qualifying domestic entity" in the UAE, defined as any UAE company with substantial business operations in the jurisdiction. The GCGRA also mandates player management tools, including deposit limits and cooling-off periods for online gaming. The first lottery license has been granted to The Game LLC, operating under the banner of the 'UAE Lottery'. This move supersedes existing lottery operators like Mahzooz and Big Ticket, which are no longer legally permitted to offer their services. Players are required to engage only with licensed gaming operators to avoid severe penalties. The regulations also specify that operators must enable players to restrict themselves from online gaming platforms for a period of at least 72 hours upon request. This is part of the broader initiative to ensure a secure and responsible commercial gaming environment in the UAE. The UAE's move to legalise gaming is seen as a strategic step to enhance its tourism and entertainment sector, leveraging its existing infrastructure and business-friendly environment. This development is expected to attract major gaming operators and contribute significantly to the country's economy. The country does not have any formal gaming laws, and therefore the project details about the casino were not completely made public. Local citizens are not permitted for gambling, which remains a legal and cultural taboo. Human Rights Watch has reported on the country's ongoing unfair mass trials, restrictions of freedom of speech and abuses to migrant labor forces. The annual Freedom House report on Freedom in the World has listed the United Arab Emirates as "Not Free" every year since 1999, the first year for which records are available on their website. In 2025, the country ranked 18 out of 100 in terms of the freedom index, due to a lack of free elections, lack of government transparency and accountability, and a lack of free media and independent judicial system, and low scores against other metrics. Freedom of association is also severely curtailed, and in most cases, banned under existing law. In the UAE an association requires twenty individuals, none of which can have previous convictions and must be preauthorized and registered with the government. All associations have to be submitted to censorship guidelines and all publications have first to be approved by the government. Updated in 2022, article 188 in the Penal Code makes the establishment of an association with the intended goal of challenging the existing regime punishable by life imprisonment or the death penalty. In its 2025 Annual Report, Amnesty International has continuously identified severe human rights violations, particularly against freedom of assembly, freedom speech and an uptick in arbitrary arrest and torture. Immigrant workers are often subject to harsh forms of the law within the country, and are often victims of arbitrary detention or torture within the country. One notable example is Ryan Cornelius, a 71-year-old British citizen who has been unlawfully detained in the UAE since 2008. The Arab Organization for Human Rights obtained testimonies from defendants who claimed being kidnapped, tortured and abused in detention centers; they reported sixteen methods of torture including beatings, threats with electrocution and denial of medical care. Repressive measures, including deportation, were applied on foreigners based on allegations of attempts to destabilize the country. The issue of sexual abuse among female domestic workers is another area of concern, particularly given that domestic servants are not covered by the UAE labour law of 1980 or the draft labour law of 2007. Additionally, the kafala system, or sponsorship for work results in a significant cost to migrant workers and conditions comparable to indentured servitude. Protests by foreign workers have been suppressed, and protesters imprisoned without due process; including in 2008, 2012, and most recently in 2023. The state security apparatus in the UAE has been accused of human rights abuses including forced disappearance, arbitrary arrests and torture. In a mass trial in 2013, human rights activist and lawyer, Salim al-Shehhi claimed he was held in solitary confinement and forced to give a confession to crimes he was accused of. In 2023, the country held its largest mass trial where defendants were not given fair treatment. Beginning in December 2023, a trial with 84 defendants resulted in 43 people sentenced to life in prison, ten received sentences up to fifteen years for peaceful protests against the government. Those convicted were Bangladeshi individuals in the UAE, protesting their home government, while the UAE claimed the defendants were a part of a terrorist organization. The trial took place in secrecy with no documents or evidence provided in the court. In January 2025, Human Rights Watch (HRW) published a report highlighting the human rights abuses committed by the UAE in 2024, majorly focusing on the unfair mass trial, where the UAE's use of Federal Penal Code and the Cybercrime Law were used to silence government critics, journalists, dissidents and activists, while restricting their freedom of expression. A December 2024 report by European Centre for Democracy and Human Rights (ECDHR) highlights the country's acute issue with unlawful, political persecution and absence of judicial independence. Trials are often held in secrecy and the defendants' lawyers are neglected from accessing case files and court documents. The UAE's 2014 Counter-Terrorism Law is used to enforce travel bans, life imprisonment and even death penalty for peaceful critics of the regime and those managing an organization. The UAE's counterterrorism law represses freedom of expression. The country's judicial system lacks any form of transparency or independence, and international organizations have called on the UN to form an independent committee to review all allegations of torture, incommunicado detention, and unfair trials. Investigations have found that Qatari men have been abducted by the UAE government and allegedly withheld information about the men's fate from their families. Over 4,000 Shia expatriates have been deported from the UAE; including Lebanese Shia families for their alleged sympathies for Hezbollah. In 2013, 94 Emirati activists were held in secret detention centres and put on trial for allegedly attempting to overthrow the government; a relative of a defendant was arrested for tweeting about the trial, and sentenced to 10 months in jail. The latest forced disappearance involves three sisters from Abu Dhabi. The UAE has expanded its international influence, subsequently committing human rights abuses across national borders. The country has been a leading supporter of Israel's genocide in Gaza as well as funding the genocide in Sudan, through direct support and supply of weapons to the Rapid Support Forces in the Sudanese civil war. On 29 March 2024, Sudan filed a formal complaint with the United Nations Security Council (UNSC), in response to the UAE's planning and backing the RSF militias against the Sudanese army. The ongoing conflict has reached new heights of violence with the continued support of the RSF by the UAE in terms of weapons and other equipment. Reports stating the Emirates wanted to provide humanitarian support for the Sudanese people turned out to be an expansion of a covert operation to funnel money, weapons - including drone technology - to opposition forces. Officials said the UAE was playing the most consequential role by inflaming the crisis, while pledging to ease it. In October 2024, Sudan wrote a second official letter to the UNSC, calling for it to take strong action against the UAE's continued aggression towards Sudan, with the Sudanese Foreign Ministry also claimed that the UAE is not just an indirect supporter of RSF, but rather a "vicious frontline player in the war of aggression" against Sudan. As a response to their poor human rights records, the government of the UAE has tried to strengthen relations with a number of western private and public entities through whitewashing, to improve their public image. They established a Soft Power Council in 2017 in order to address their international image. The UAE deploys a number of these techniques, including gender-washing, green-washing and sports-washing; as evident in hosting major events like COP28, sporting events including Formula One races, the Abu Dhabi Cup in 2026; or promoting tourism and business to Dubai. The growing interest in playing a role in the international entertainment industriy is an attempt to scour the country's image of its ongoing human rights violations. They continue to face criticism for its ongoing contribution to climate change and human rights abuses, despite participating in these international events. In 2018, the country hosted the Second Annual World Tolerance Summit, which was protested by a number of NGOs and scholars. Migrant workers in the UAE are not allowed to join trade unions or go on strike. Those who strike may risk prison and deportation, as seen in 2014 when dozens of workers were deported for striking. The International Trade Union Confederation has called on the United Nations to investigate evidence that thousands of migrant workers in the UAE are treated as slave labour. In 2019, an investigation performed by The Guardian revealed that thousands of migrant construction workers employed on infrastructure and building projects for the UAE's Expo 2020 exhibition were working in an unsafe environment. Some were even exposed to potentially fatal situations due to cardiovascular issues. Long hours in the sun made them vulnerable to heat strokes. A report in January 2020 highlighted that the employers in the United Arab Emirates have been exploiting the Indian labor and hiring them on tourist visas, which is easier and cheaper than work permits. These migrant workers are left open to labor abuse, where they also fear reporting exploitation due to their illegal status. Besides, the issue remains unknown as the visit visa data is not maintained in both the UAE and Indian migration and employment records. In a 22 July 2020 news piece, Reuters reported human rights groups as saying conditions had deteriorated because of the COVID-19 pandemic. Many migrant workers racked up debt and depended on the help of charities. The report cited salary delays and layoffs as a major risk, in addition to overcrowded living conditions, lack of support and problems linked with healthcare and sick pay. Reuters reported at least 200,000 workers, mostly from India but also from Pakistan, Bangladesh, the Philippines and Nepal, had been repatriated, according to their diplomatic missions. On 2 May 2020, the Consul General of India in Dubai, Vipul, confirmed that more than 150,000 Indians in the United Arab Emirates registered to be repatriated through the e-registration option provided by Indian consulates in the UAE. According to the figures, 25% of applicants lost their jobs and nearly 15% were stranded in the country due to lockdown. Besides, 50% of the total applicants were from the state of Kerala, India. On 9 October 2020, The Telegraph reported that many migrant workers were left abandoned, as they lost their jobs amidst the tightening economy due to COVID-19. Various human rights organisations have raised serious concerns about the alleged abuse of migrant workers by major contractors organising Expo 2020. UAE's business solution provider German Pavilion is also held accountable for abusing migrant workers. Environmental issues in the United Arab Emirates are caused by the exploitation of natural resources, rapid population growth, and high energy demand. Climate change contributes to UAE's water scarcity, drought, and rising sea level. The country is a leading oil and gas producer. Its energy consumption per capita is around 370 Gigajoule. The UAE's carbon dioxide emissions per capita are high, ranking sixth among countries globally. Recently, it made efforts to make itself more sustainable. Those include: According to official sources, in Dubai, "the share of mass transport in people's mobility increased from 6 per cent in 2006 to 20.61 per cent in 2022." Together with the USA the country invested 17 billion dollars in sustainable agriculture. Economy The United Arab Emirates has developed from a juxtaposition of Bedouin tribes to one of the world's wealthiest states in only about 50 years, boasting one of the highest GDP (PPP) per capita figures in the world. Economic growth has been impressive and steady throughout the history of this young confederation of emirates with brief periods of recessions only, e.g. in the global financial and economic crisis years 2008–09, and a couple of more mixed years starting in 2015 and persisting until 2019. Between 2000 and 2018, average real gross domestic product (GDP) growth was at close to 4%. It is the second largest economy in the GCC (after Saudi Arabia), with a nominal gross domestic product (GDP) of US$414.2 billion, and a real GDP of 392.8 billion constant 2010 USD in 2018. Since its independence in 1971, the UAE's economy has grown by nearly 231 times to 1.45 trillion AED in 2013. The non-oil trade has grown to 1.2 trillion AED, a growth by around 28 times from 1981 to 2012. Supported by the world's seventh-largest oil reserves and aided by prudent investments coupled with a resolute commitment to economic liberalism and strong governmental oversight, the UAE has witnessed its real GDP increase by more than three times over the past four decades. Presently, the UAE is among the wealthiest countries globally, with GDP per capita nearly 80% higher than the OECD average. As impressive as economic growth has been in the UAE, the total population has increased from just around 550,000 in 1975 to close to 10 million in 2018. This growth is mainly due to the influx of foreign workers into the country, making the national population a minority. The UAE features a unique labour market system, in which residence in the UAE is conditional on stringent visa rules. This system is a major advantage in terms of macroeconomic stability, as labour supply adjusts quickly to demand throughout economic business cycles. This allows the government to keep unemployment in the country on a very low level of less than 3%, and it also gives the government more leeway in terms of macroeconomic policies – where other governments often need to make trade-offs between fighting unemployment and fighting inflation. Between 2014 and 2018, the accommodation and food, education, information and communication, arts and recreation, and real estate sectors overperformed in terms of growth, whereas the construction, logistics, professional services, public, and oil and gas sectors underperformed. As for competitiveness, in June 2024 it was reported that the UAE has moved up three place to the 7th place among the top 10 countries in the IMD World Competitiveness. This ranking is issued by the World Competitiveness Centre of the Institute for Management Development (IMD) in Switzerland. The UAE is ranked as the 26th best country in the world for doing business by the Doing Business 2017 Report published by the World Bank Group. The UAE are in the top ranks of several other global indices, such as the World Happiness Report (WHR) and 30th in the Global Innovation Index in 2025. The Economist Intelligence Unit (EIU) assigns the UAE rank two regionally in terms of business environment and 22 worldwide. From the 2018 Arab Youth Survey, the UAE emerges as the top Arab country in areas such as living, safety and security, economic opportunities, and starting a business, and as an example for other states to emulate. The weaker points remain the level of education across the UAE population, limitations in the financial and labour markets, barriers to trade and some regulations that hinder business dynamism. The major challenge for the country, though, remains translating investments and strong enabling conditions into innovation and creative outputs. UAE law does not allow trade unions to exist. The right to collective bargaining and the right to strike are not recognised, and the Ministry of Labour has the power to force workers to go back to work. Migrant workers who participate in a strike can have their work permits cancelled and be deported. Consequently, there are very few anti-discrimination laws in relation to labour issues, with Emiratis – and other GCC Arabs – getting preference in public sector jobs despite lesser credentials than competitors and lower motivation. In fact, just over eighty per cent of Emirati workers hold government posts, with many of the rest taking part in state-owned enterprises such as Dubai Properties and the airline Emirates. Western states, including the United Kingdom, were also warned by the Emirati Trade Minister, Thani bin Ahmed Al Zeyoudi, to keep politics separate from trade and the economy, as it dilutes the agreements' main objectives. In 2023, Al Zeyoudi indicated that these countries should "tone down" the human and workers' rights provisions in the trade deals, in order to gain greater market access and business opportunities. The UAE's monetary policy stresses stability and predictability. The Central Bank of the UAE (CBUAE) keeps a peg to the US Dollar (USD) and moves interest rates close to the Federal Funds Rate. According to Fitch Ratings, the decline in property sector follows risks of progressively worsening the quality of assets in possession with UAE banks, leading the economy to rougher times ahead. Even though as compared to retail and property, UAE banks fared well. The higher US interest rates followed since 2016 – which the UAE currency complies to – have boosted profitability. However, the likelihood of plunging interest rates and increasing provisioning costs on bad loans, point to difficult times ahead for the economy. Since 2015, economic growth has been more mixed due to a number of factors impacting both demand and supply. In 2017 and 2018, growth has been positive but on a low level of 0.8 and 1.4%, respectively. To support the economy, the government is currently following an expansionary fiscal policy. However, the effects of this policy are partially offset by monetary policy, which has been contractionary. If not for the fiscal stimulus in 2018, the UAE economy would probably have contracted in that year. One of the factors responsible for slower growth has been a credit crunch, which is due to, among other factors, higher interest rates. Government debt has remained on a low level, despite high deficits in a few recent years. Risks related to government debt remain low. Inflation has been picking up in 2017 and 2018. Contributing factors were the introduction of a value added tax (VAT) of 5% in 2018 as well as higher commodity prices. Despite the government's expansionary fiscal policy and a growing economy in 2018 and at the beginning of 2019, prices have been dropping in late 2018 and 2019 owing to oversupply in some sectors of importance to consumer prices. The UAE has an attractive tax system for companies and wealthy individuals, making it a preferred destination for companies seeking tax avoidance. The NGO Tax Justice Network places them in 2021 in the group of the ten largest tax havens. In 2023, the UAE's legal system fell under international scrutiny, as the members of the British Parliament opened an inquiry into how the foreign business executives are treated in the country, in case of accusations of breaking the law. 2024 will be the third consecutive year that the UAE holds first place as the world's leading wealth magnet, as 6,700 wealthy migrants are set to move to the country. The UAE government implemented value-added tax (VAT) in the country from 1 January 2018, at a standard rate of 5%. While the government may still adjust the exact arrangement of the VAT, it is not likely that any new taxes will be introduced in the foreseeable future. Additional taxes would destroy one of the UAE's main enticements for businesses to operate in the country and put a heavy burden on the economy. Oil and gas production is an important part of the economy of the UAE. In 2018, the oil and gas sector contributed 26% to overall GDP. The UAE leadership initiated economic diversification efforts even before the oil price crash in the 1980s, resulting in the UAE having the most diversified economy in the Middle East and North Africa (MENA) region at present. Although the oil and gas sector continues to be significant to the UAE economy, these efforts have yielded great resilience during periods of oil price fluctuations and economic turbulence. The introduction of the VAT has provided the government with an additional source of income – approximately 6% of the total revenue in 2018, or 27 billion United Arab Emirates dirham (AED) – affording its fiscal policy more independence from oil- and gas-related revenue, which constitutes about 36% of the total government revenue. The Barakah nuclear power plant is the first on the Arabian peninsula and expected to reduce the carbon footprint of the country. The UAE has solar generation potential, and its energy policy has shifted due to the declining price of solar. The Dubai Clean Energy Strategy aims to provide 7 per cent of Dubai's energy from clean energy sources by 2020. It will increase this target to 25 per cent by 2030 and 75 per cent by 2050. In 2023, ADNOC and its CEO Sultan Al Jaber closed at least 20 business deals worth nearly $100 billion. The state oil firm was alleged of exploiting the UAE's COP28 presidency to pursue oil and gas deals. As per leaked documents, Al Jaber's team targeted 16 nations to lobby firms, delegates or ministers on such deals. ADNOC sought deals with companies from 12 countries, which included 11 of the 16 target nations. Al Jaber and senior ADNOC officials openly discussed deals. COP28 organising teams were excluded from meetings and replaced by ADNOC officials, leaving a closed group that made deals. Tourism acts as a growth sector for the entire UAE economy. Dubai is the top tourism destination in the Middle East. According to the annual MasterCard Global Destination Cities Index, Dubai is the fifth most popular tourism destination in the world. Dubai holds up to 66% share of the UAE's tourism economy, with Abu Dhabi having 16% and Sharjah 10%. Dubai welcomed 10 million tourists in 2013. The UAE has the most advanced and developed infrastructure in the region. Since the 1980s, the UAE has been spending billions of dollars on infrastructure. These developments are particularly evident in the larger emirates of Abu Dhabi and Dubai. The northern emirates are rapidly following suit, providing major incentives for developers of residential and commercial property. The inbound tourism expenditure in the UAE for 2019 accounted for 118.6 per cent share of the outbound tourism expenditure. Since 6 January 2020, tourist visas to the United Arab Emirates are valid for five years. It has been projected that the travel and tourism industry will contribute about 280.6 billion United Arab Emirati dirham to the UAE's GDP by 2028. The country's major tourist attraction includes the famous Burj Khalifa in Dubai, the tallest tower in the world; The World archipelago and Palm Jumeirah also in Dubai; Sheikh Zayed Grand Mosque and Yas Marina Circuit in Abu Dhabi; Al Hajar Mountains in Fujairah. The uniqueness of the country's natural desert life, especially with the Bedouins, also facilitates the country's tourist industry. The UAE will diversify its tourism sector with the introduction of casino gambling. Wynn Al Marjan Island in Ras Al Khaimah will feature the first casino in the country and will also be the country's first integrated resort when it opens in March 2027. Abu Dhabi is set to become the home of Disneyland Abu Dhabi, the first Disney theme park in the Middle East. Dubai International Airport became the busiest airport in the world by international passenger traffic in 2014, overtaking London Heathrow. Abu Dhabi International Airport is the second-largest airport in the UAE. Due to the announced expansion of Al Maktoum Airport on 28 April 2024, Dubai International Airport will be shut down once Al Maktoum Airport expansion will be completed. Abu Dhabi, Dubai, Sharjah, Ajman, Umm Al Quwain, and Ras Al Khaimah are connected by the E11 highway, which is the longest road in the UAE. In Dubai, in addition to the Dubai Metro, The Dubai Tram and Palm Jumeirah Monorail also connect specific parts of the city. There is also a bus, taxi, abra (traditional boat), and water taxi network run by RTA. T1, a double-decker tram system in Downtown Dubai, were operational from 2015 to 2019. Salik, meaning "open" or "clear", is Dubai's electronic toll collection system that was launched in July 2007 and is part of Dubai's traffic congestion management system. Each time one passes through a Salik tolling point, a toll is deducted from the drivers' prepaid toll account using advanced Radio Frequency Identification (RFID) technology. There are four Salik tolling points placed in strategic locations in Dubai: at Al Maktoum Bridge, Al Garhoud Bridge, and along Sheikh Zayed Road at Al Safa and Al Barsha. A 1,200 km (750 mi) country-wide railway is under construction which will connect all the major cities and ports. The Dubai Metro is the first urban train network in the Arabian Peninsula. The major ports of the United Arab Emirates are Khalifa Port, Zayed Port, Port Jebel Ali, Port Rashid, Port Khalid, Port Saeed, and Port Khor Fakkan. The Emirates are increasingly developing their logistics and ports in order to participate in trade between Europe and China or Africa. For this purpose, ports are being rapidly expanded and investments are being made in their technology. The Emirates have historically been and currently still are part of the Maritime Silk Road that runs from the Chinese coast to the south via the southern tip of India to Mombasa, from there through the Red Sea via the Suez Canal to the Mediterranean, there to the Upper Adriatic region and the northern Italian hub of Trieste with its rail connections to Central Europe, Eastern Europe, and the North Sea. The United Arab Emirates is served by two telecommunications operators, Etisalat and Emirates Integrated Telecommunications Company ("du"). Etisalat operated a monopoly until du launched mobile services in February 2007. Internet subscribers were expected to increase from 0.904 million in 2007 to 2.66 million in 2012. The regulator, the Telecommunications Regulatory Authority, mandates filtering websites for religious, political, and sexual content. 5G wireless services were installed nationwide in 2019 through a partnership with Huawei. Demographics According to an estimate by the World Bank, the UAE's population in 2020 was 9,890,400. Immigrants accounted for 88.52% while Emiratis made up the remaining 11.48%. This unique imbalance is due to the country's exceptionally high net migration rate of 21.71, the world's highest. UAE citizenship is very difficult to obtain other than by filiation and only granted under very special circumstances. The UAE is ethnically diverse. The five most populous nationalities in the emirates of Dubai, Sharjah, and Ajman are Indian (25%), Pakistani (12%), Emirati (9%), Bangladeshi (7%), and Filipino (5%). Immigrants from Europe, Australia, and North America make up around 100,000 of the population. The rest of the population are from other Arab states. About 88% of the population of the United Arab Emirates is urban. The average life expectancy was 76.7 in 2012, higher than for any other Arab country. With a male/female sex ratio of 2.2 males for each female in the total population and 2.75 to 1 for the 15–65 age group, the UAE's gender imbalance is second highest in the world after Qatar. Modern Standard Arabic is the national language of the United Arab Emirates. English is the most commonly spoken language, following British English conventions. Emirati Arabic, a variety of Gulf Arabic, is spoken natively by Emirati people. Islam is the largest and the official state religion of the United Arab Emirates. The government follows a policy of tolerance toward other religions and rarely interferes in the religious activities of non-Muslims. There are more Sunni than Shia Muslims in the United Arab Emirates, and 85% of the Emirati population are Sunni Muslims with most of them adhering to the Maliki school of jurisprudence. The vast majority of the remainder 15% are Shia Muslims, who are concentrated in the Emirates of Dubai and Sharjah. Although no official statistics are available for the breakdown between Sunni and Shia Muslims among noncitizen residents, media estimates suggest less than 20% of the noncitizen Muslim population are Shia. The Sheikh Zayed Grand Mosque in Abu Dhabi is the largest mosque in the country and a major tourist attraction. Ibadi is common among Omanis in the UAE, while Sufi influences exist as well. Christians account for 9% of the total population of the United Arab Emirates, according to the 2005 census; estimates in 2010 suggested a figure of 12.6%. Roman Catholics and Protestants form significant proportions of the Christian minority. The country has over 52 churches in 2023. Many Christians in the United Arab Emirates are of Asian, African, and European origin, along with fellow Middle Eastern countries such as Lebanon, Syria, and Egypt. The United Arab Emirates forms part of the Apostolic Vicariate of Southern Arabia and the Vicar Apostolic Bishop Paul Hinder is based in Abu Dhabi. There is a small Jewish community in the United Arab Emirates. Before 2023, there was only one known synagogue in Dubai, which has been open since 2008 and the synagogue also welcomes visitors. Another synagogue, Moses Ben Maimon Synagogue, was completed in 2023 as part of the Abrahamic Family House complex in Abu Dhabi. As of 2019, according to Rabbi Marc Schneier of the Foundation for Ethnic Understanding, it is estimated that there are about 150 families to 3,000 Jews who live and worship freely in the UAE. South Asians in the United Arab Emirates constitute the largest ethnic group in the country. Over 2 million Indian migrants (mostly from the southern states of Kerala, Andhra Pradesh, Coastal Karnataka, and Tamil Nadu) are estimated to be living in the UAE. There are currently three Hindu temples in the country. Other religions also exist in the United Arab Emirates, including Jainism, Sikhism, Buddhism, Judaism, Baháʼís, and Druze. The UAE Minister of Foreign Affairs and International Co-operation, Abdullah bin Zayed, announced in 2019 the design and construction plan of the Abrahamic Family House, which will serve as an interfaith complex that houses a synagogue, mosque, and a church on Saadiyat Island in Abu Dhabi. The education system through secondary level is administered by the Ministry of Education in all emirates except Abu Dhabi, where it falls under the authority of the Department of Education and Knowledge. Public schools are divided into primary schools, middle schools, and high schools. The public schools are government-funded and the curriculum is created to match the United Arab Emirates' development goals. The medium of instruction in the public school is Arabic with emphasis on English as a second language. There are also many private schools which are internationally accredited. Public schools in the country are free for citizens of the UAE, while the fees for private schools vary. The higher education system is monitored by the Ministry of Higher Education. The ministry also is responsible for admitting students to its undergraduate institutions. The adult literacy rate in 2015 was 93.8%. The UAE has shown a strong interest in improving education and research. Enterprises include the establishment of the CERT Research Centres and the Masdar Institute of Science and Technology and Institute for Enterprise Development. According to the QS Rankings, the top-ranking universities in the country are the United Arab Emirates University (421–430th worldwide), Khalifa University (441–450th worldwide), the American University of Sharjah (431–440th), and University of Sharjah (551–600th worldwide). United Arab Emirates was ranked 33rd in the Global Innovation Index in 2021, up from 36th in 2019. The life expectancy at birth in the UAE is at 76.96 years. Cardiovascular disease is the principal cause of death in the UAE, constituting 28% of total deaths; other major causes are accidents and injuries, malignancies, and congenital anomalies. According to World Health Organization data from 2016, 34.5% of adults in the UAE are clinically obese, with a body mass index (BMI) score of 30 or more. In February 2008, the Ministry of Health unveiled a five-year health strategy for the public health sector in the northern emirates, which fall under its purview and which, unlike Abu Dhabi and Dubai, do not have separate healthcare authorities. The strategy focuses on unifying healthcare policy and improving access to healthcare services at reasonable cost, at the same time reducing dependence on overseas treatment. The ministry plans to add three hospitals to the current 14, and 29 primary healthcare centres to the current 86. Nine were scheduled to open in 2008. The introduction of mandatory health insurance in Abu Dhabi for expatriates and their dependents was a major driver in reform of healthcare policy. Abu Dhabi nationals were brought under the scheme from 1 June 2008 and Dubai followed for its government employees. Eventually, under federal law, every Emirati and expatriate in the country will be covered by compulsory health insurance under a unified mandatory scheme. The country has benefited from medical tourists from all over the Cooperation Council for the Arab States of the Gulf. The UAE attracts medical tourists seeking cosmetic surgery and advanced procedures, cardiac and spinal surgery, and dental treatment, as health services have higher standards than other Arab countries in the Persian Gulf. Culture Emirati culture is based on Arabian culture and has been influenced by the cultures of Persia, India, and East Africa. Arabian and Arabian inspired architecture is part of the expression of the local Emirati identity. Arabian influence on Emirati culture is noticeably visible in traditional Emirati architecture and folk arts. For example, the distinctive wind tower that tops traditional Emirati buildings, the barjeel, has become an identifying mark of Emirati architecture and is attributed to Arabian influence. This influence is derived both from traders who fled the tax regime in Persia in the early 19th century and from Emirati ownership of ports on the Arabian coast, for instance the Al Qassimi port of Lingeh. Major holidays in the United Arab Emirates include Eid al Fitr, which marks the end of Ramadan, and National Day (2 December), which marks the formation of the United Arab Emirates. Literature and other written works by modern Emiratis are not well known globally because the majority of writers in country do not publish in English, women are restricted from participating in traditional literary groups, and freedom of expression is surpessed. The earliest known poet in the UAE is Ibn Majid, born between 1432 and 1437 in Ras Al-Khaimah. The most famous Emirati writers were Mubarak Al Oqaili (1880–1954), Salem bin Ali al Owais (1887–1959), and Ahmed bin Sulayem (1905–1976). Three other poets from Sharjah, known as the Hirah group, are observed to have been heavily influenced by the Apollo and Romantic poets. The Sharjah International Book Fair is the oldest and largest in the country. Traditional folk dances, such as Al-Ayyala, are performed by men and women in the UAE during festivals, holidays, and weddings. Liwa is a type of music and dance performed locally, mainly in communities that contain descendants of Bantu peoples from the African Great Lakes region. The list of museums in the United Arab Emirates includes some of regional repute, most famously Sharjah with its Heritage District containing 17 museums, which in 1998 was the Cultural Capital of the Arab World. In Dubai, the area of Al Quoz has attracted a number of art galleries as well as museums such as the Salsali Private Museum. Abu Dhabi has established a culture district on Saadiyat Island. Six grand projects are planned, including the Guggenheim Abu Dhabi and the Louvre Abu Dhabi. Dubai also plans to build a Kunsthal museum and a district for galleries and artists. There are very few cinemas of the United Arab Emirates, and any published material is subject to strict censorship guidelines, despite a repeal of the harshest guidelines in 2021. To view a movie in the country you must be 21 years old. The UAE's media is annually classified as "not free" in the Freedom of the Press report by Freedom House. The UAE ranks poorly in the annual Press Freedom Index by Reporters without Borders. Dubai Media City is the UAE's main media zone. The UAE is home to some pan-Arab broadcasters, including the Middle East Broadcasting Centre and Orbit Showtime Network. In 2007, Sheikh Mohammed bin Rashid Al Maktoum decreed that journalists can no longer be prosecuted or imprisoned for reasons relating to their work. At the same time, the UAE has made it illegal to disseminate online material that can threaten "public order", and hands down prison terms for those who "deride or damage" the reputation of the state and "display contempt" for religion. Journalists who are arrested for violating this law are often brutally beaten by the police. According to UAE Year Book 2013, there are seven Arabic newspapers and eight English language newspapers, as well as a Tagalog newspaper produced and published in the UAE. New media, such as Facebook, Twitter, YouTube, and Instagram are used widely in the UAE by the government entities and by the public as well. The UAE government avails official social media accounts to communicate with public and hear their needs. In recent years, there has been a notable surge in digital media consumption in the UAE, driven by the widespread use of platforms like Snapchat and TikTok among the younger population. Influencers on these platforms play a significant role in shaping trends and promoting various products and services. The government has also implemented digital initiatives to enhance e-Government services and promote smart city concepts, further demonstrating the UAE's commitment to technological advancements. The traditional food of the Emirates has always been rice, fish, and meat. The people of the United Arab Emirates have adopted most of their foods from other West and South Asian countries including Iran, Saudi Arabia, Oman, Pakistan, and India. Seafood has been the mainstay of the Emirati diet for centuries. Meat and rice are other staple foods, with lamb and mutton preferred to goat and beef. Popular beverages are coffee and tea, which can be complemented with cardamom or saffron to give them a distinctive flavour. Popular cultural Emirati dishes include threed, machboos, khubisa, khameer, and chabab bread among others while lugaimat is a famous Emirati dessert. With the influence of western culture, fast food has become very popular among young people, to the extent that campaigns have been held to highlight the dangers of fast food excesses. Alcohol is allowed to be served only in hotel restaurants and bars. All nightclubs are permitted to sell alcohol. Specific supermarkets may sell alcohol, but these products are sold in separate sections. Likewise, pork, which is haram (not permitted for Muslims), is sold in separate sections in all major supermarkets. Although alcohol may be consumed, it is illegal to be intoxicated in public or drive a motor vehicle with any trace of alcohol in the blood. Formula One is particularly popular in the United Arab Emirates, and a Grand Prix is annually held at the Yas Marina Circuit in Yas Island in Abu Dhabi. The race takes place in the evening, and was the first ever Grand Prix to start in daylight and finish at night. Other popular sports include camel racing, falconry, endurance riding, and tennis. The emirate of Dubai is also home to two major golf courses: the Dubai Golf Club and Emirates Golf Club. Aside from the leisure aspect, sports can play an important part in shaping national identity. Falconry, for example, has functioned as a national symbol since its inception in 1971. Aside from the national prevalence of falconry, the UAE have played a formative role internationally in the co-ordination of UNESCO's recognition of falconry as intangible heritage. In the past, child camel jockeys were used, leading to widespread criticism. Eventually, the UAE passed laws banning the use of children for the sport, leading to the prompt removal of almost all child jockeys. Recently robot jockeys have been introduced to overcome the problem of child camel jockeys which was an issue of human rights violations. Ansar Burney is often praised for the work he has done in this area. Football is a popular sport in the UAE. Al Nasr, Al Ain, Al Wasl, Sharjah, Al Wahda, Shabab Al Ahli, Baniyas, Emirates and Al Jazira are the most popular teams and enjoy the reputation of long-time regional champions. The United Arab Emirates Football Association was established in 1974 and since then has dedicated its time and effort to promoting the game, organising youth programmes, and improving the abilities of not only its players, but also the officials and coaches involved with its regional teams. The UAE’s senior men’s team qualified for the Italy FIFA World Cup in 1990 (along with Egypt) and finished at 24th place. It was the third consecutive World Cup with two Arab nations qualifying, after Kuwait and Algeria in 1982, and Iraq and Algeria again in 1986. The UAE has won the Gulf Cup Championship twice: the first cup won in January 2007 held in Abu Dhabi and the second in January 2013, held in Bahrain; they were runners-up four times and placed third four times. The UAE hosted the 1996 AFC Asian Cup and went all the way to the final, where they were defeated by the eventual champions and placed 2nd; subsequently they qualified for the 1997 Confederations Cup as Asian champions and finished in 6th place. They also finished 3rd at the 2015 Asian Cup. In the Olympic level the UAE finished 2nd in 2010 and 3rd in 2018 Asian Games, and participated in the 2012 Summer Olympics to finish 15th. In the Arab Cup they finished as runners-up in 20015 at Switzerland. Other tournaments they Won were the 2005 Kirin Cup, 2000 LG Cup, 2013 OSN Cup. Regarding Emirati clubs' international achievements, Al Ain qualified for the 2018 FIFA Club World Cup, defeating the champions of Oceania, Africa, and South America to ultimately face European champions Real Madrid in the final and finish as runners-up. Al Ain also qualified for the expanded 2025 FIFA Club World Cup, finishing with three points and being eliminated in the group stage. Al Ain won the AFC Champions League Elite twice, in 2003 and 2024, and finished as runners-up twice, in 2005 and 2016, a feat also achieved by Shabab Al Ahli in 2015. They also finished third in 1998, a position also attained by Al Wasl in 1993. In the AFC Champions League Two, Al Shaab (now Sharjah) finished as runners-up in 1995 and won the title 30 years later in 2025. Eight editions of the AGCFF Champions League were won by Emirati clubs, finished as runners-up four times and third place twice. Al Ain also finished as runners-up for the 2024 Asian-Pacific-African Cup, part of the 2024 FIFA Intercontinetal Cup. The only two editions of the UAE-Morocco Super Cup 2015-2016 ended with the Emirati clubs winning, and the four Qatar-UAE Super/Challenge Cups and Shields in 2025 ended with all Emirati clubs winning them. Among historical Emirati footballers who have achieved continental, regional, and international success or played professionally abroad are: Ismail Matar, Omar Abdulrahman, Ali Mabkhout, Caio Lucas (since 2016), Ahmed Khalil, Mohammed Shaker, Adnan Al Talyani, Bandar Al Ahbabi, Zuhair Bakhit, Majed Hassan, Khalid Al Dhanhani, Majed Rashid, Fahad Khamis, Mohammed Omar, Junior Ndiaye, Khalil Ghanem, Ahmed Barman, Mohammed Abbas, Khalid Al Baloushi, Khalid Al Hashmi, Khalid Eisa, Faisal Khalil, Hamdan Al Kamali, Mohammed Awadallah, Zayed Al Ameri, Adel Al Hosani, Yousef Husain, Mackenzie Hunt (since 2007), Marcus Meloni (since 2019), Erik Jorgens (since 2020), Kouame Autonne (since 2019), Sultan Al Shamsi, Sultan Adil, Zayed Sultan, Tahnoon Al Zaabi, Mohammed Abdulrahman, Shaheen Abdulrahman, Khalil Ghanem, Muhsin Musabeh Cricket is one of the most popular sports in the UAE, largely because of the expatriate population from the SAARC countries, the United Kingdom, and Australia. The headquarters of the International Cricket Council (ICC) have been located in the Dubai Sports City complex since 2005, including the ICC Academy which was established in 2009. There are a number of international cricket venues in the UAE, which are frequently used for international tournaments and "neutral" bilateral series due to the local climate and Dubai's status as a transport hub. Notable international tournaments hosted by the UAE have included the 2014 Under-19 Cricket World Cup, the 2021 ICC Men's T20 World Cup, and three editions of the Asia Cup (1984, 1995, and 2018). Notable grounds include the Sharjah Cricket Association Stadium in Sharjah, Sheikh Zayed Cricket Stadium in Abu Dhabi, and Dubai International Cricket Stadium in Dubai. The Emirates Cricket Board (ECB) became a member of the ICC in 1990. The UAE national cricket team has qualified for the Cricket World Cup on two occasions (1996 and 2015) and the ICC Men's T20 World Cup on two occasions (2014 and 2022). The national women's team is similarly one of the strongest associate teams in Asia, notably participating in the 2018 ICC Women's World Twenty20 Qualifier. Following the 2009 attack on the Sri Lanka national cricket team, the UAE served as the de facto home of the Pakistan national cricket team for nearly a decade, as well as hosting the Pakistan Super League. The UAE has also hosted one full edition of Indian Premier League (IPL) in 2020 and two partial editions of the Indian Premier League (IPL) in 2014 and 2021. See also Notes References Further reading External links 24°N 54°E / 24°N 54°E / 24; 54 |
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[SOURCE: https://en.wikipedia.org/wiki/Smoking_age] | [TOKENS: 981] |
Contents Legal smoking age The smoking age is the minimum legal age required to purchase or use tobacco or cannabis products. Most countries have laws that forbid sale of tobacco products to persons younger than certain ages, usually the age of majority or the drinking age . This article does not discuss laws that regulate electronic cigarettes. Laws by region It is illegal to sell or give, directly or indirectly any tobacco product to any under-aged person, and anyone caught doing so will be subjected to harsh penalties. Anyone caught selling tobacco products to an under-aged person will be charged in court and can be fined up to 5,000 Singapore dollars for the first offense, and up to $10,000 for the second and subsequent offenses. In addition, the store involved will have the tobacco license suspended for 6 months at the first offense, and permanently revoked for the second offense. However, if the store involved is caught selling to minors in school uniform, or to minors below the age of 12, the tobacco license will be permanently revoked even at its first offense. Anyone caught buying tobacco products for an under-aged person will be charged in court can be fined up to 2,500 Singapore dollars for the first offence, and up to 5,000 for the second and subsequent offences. Anyone caught giving tobacco products to an under-aged person will be charged in court and can be fined up to 500 Singapore dollars for the first offence, and up to 1,000 Singapore dollars for the second and subsequent offences. It is illegal for minors to purchase, use or possess any tobacco product in public. Minors caught doing so are usually given a warning or a 30-dollar composition fine, with their school and parents informed and follow-up actions taken by the school. Minors caught more than once will have to attend not less than two smoking cessation counseling session to have their offences compounded. Minors who fail to comply with the above requirements or if they are caught four or more times, they can be charged in court and be liable to a fine not exceeding 300 Singapore dollars upon conviction. The minimum age was 16 years prior to 27 March 2002. 16 (public possession de facto) (purchase de jure) No minimum age prior to 1908. The incoming Tobacco and Vapes Bill which is set to take effect in 2027 will ban persons born on or after 1 January 2009 from ever purchasing tobacco or vapes. This, if put in place, will effectively raise the legal smoking age year over year until it is fully illegal. A similar bill was passed in New Zealand but was dismissed before it came into effect. Minimum age was 16 prior to 30 September 2007. Historical regulations Tobacco-free generation policies Tobacco-free generation policies and regulations prohibiting the sale of tobacco products to individuals born on or after a particular date.: Cannabis age Since 2012, various jurisdictions throughout the world have legalized cannabis for recreational use. In Mexico, Uruguay and cannabis-legal jurisdictions in the United States, the legal age to possess or purchase cannabis is identical to the tobacco purchase age (18 in Mexico and Uruguay and 21 in the United States). In Canada, the legal age to possess or purchase cannabis is 19 in all provinces and territories except Alberta (18) and Quebec (21). There are therefore three Canadian provinces (Manitoba, Quebec and Saskatchewan) and two territories (the Northwest Territories and Yukon) where the age to purchase tobacco is lower than the age to possess and purchase cannabis, and one province (Prince Edward Island) where the tobacco purchase age is higher. Prior to December 2019, when the United States raised its tobacco purchase age to 21 in all states and territories, several U.S. states had tobacco purchase ages lower than their cannabis possession and purchase ages. In Germany, the legal age to possess and purchase cannabis is 18. Enforcement To reduce illegal sales, active enforcement is more effective than giving retailers information. The retailer compliance with legislation can be assessed by test purchasing. Under Article 16 of the WHO Framework Convention on Tobacco Control (FCTC), most reporting Parties indicate that they ban sales of tobacco products to minors, and many have raised the minimum legal age of purchase. In the 2024 reporting cycle, several Parties reported increasing the minimum age, including the Cook Islands, Ethiopia, Ireland and the Maldives, which raised it to 21 years, and others reported expanding bans on sales to minors to cover additional tobacco and nicotine products and strengthening enforcement mechanisms and penalties. A 2024 systematic review in Nicotine & Tobacco Research examining jurisdictions that raised the minimum legal sales age for tobacco to 20 or 21 found that higher ages of sale were generally associated with lower prevalence of cigarette smoking among people aged 11–20 years, particularly where age-of-sale laws formed part of broader tobacco-control measures. See also References |
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[SOURCE: https://en.wikipedia.org/wiki/Views_of_Elon_Musk] | [TOKENS: 10579] |
Contents Views of Elon Musk Elon Musk is a businessman and entrepreneur known for his leadership of Tesla, SpaceX, Twitter, and xAI. He is the wealthiest individual in the world, and a former U.S. government employee. Despite rejecting the conservative label and describing himself as a political moderate, Musk's views have become increasingly right-wing over time, leading them to be characterized as far-right and libertarian authoritarian.[a] As the owner of Twitter, he has been accused of suppressing critics and allowing the spread of misinformation. Following his involvement in European politics, Musk’s public statements have received criticism from several world leaders. He frequently comments on topics ranging from science and technology to religion and philosophy. Within the context of American politics, Musk voted for Democratic candidates from 2008 before switching to Republican candidates in 2022 and supporting Donald Trump in 2024, with whom he had previously feuded. He identifies as a "free speech absolutist" and has expressed support for universal basic income, gun rights, a carbon tax, and H-1B visas. Conversely, he has criticized the wealth tax, short-selling, government subsidies, and Wikipedia. Musk has voiced concern about the perceived dangers of artificial intelligence and climate change, while also opposing public transportation systems, rejecting labor unions, and promoting pronatalism. During the COVID-19 pandemic in 2020, Musk defied lockdown orders, calling them "fascist", supported the Canada convoy protest against vaccine mandates, and made several contentious epidemiological claims. He has promoted conspiracy theories and made controversial statements that have led to accusations of racism, sexism, antisemitism, Islamophobia, transphobia, and spreading misinformation and disinformation. While describing himself as a "pro-Semite", his remarks about George Soros and Jewish communities have drawn condemnation from the Anti-Defamation League and the White House under Joe Biden. An immigrant himself, Musk has blamed immigration policy for illegal immigration, been described as anti-immigration, and has promoted misleading narratives about voter fraud in the United States. Politics and elections Musk has been described as being closely associated with techno-libertarians, ideologically a libertarian authoritarian, and has more recently been described as far-right in regards to European politics. Having criticized and feuded with Donald Trump, Musk supported Trump for the 2024 United States presidential election as the largest financial contributor to his campaign. Soon after, by appointment of Trump, Musk was given "special government employee" status as the de facto head of the Department of Government Efficiency (DOGE). Describing himself as "a free speech absolutist," Musk has regularly criticized American and European immigration policies, and his views on transgender issues, women, and race, have been controversial. Musk advocates for the U.S. to withdraw from both NATO and the United Nations. July 14, 2018 Before embracing Donald Trump in 2024 election cycle, Musk was known to have supported Barack Obama, Hillary Clinton, and even Joe Biden in 2020. In 2014, Musk described himself politically as "half Democrat, half Republican" and "somewhere in the middle, socially liberal and fiscally conservative". By 2018, he stated that he was "not a conservative" and saw himself as a "politically moderate"; he added, "Doesn't mean I'm moderate about all issues." He stated that he had "voted overwhelmingly for Democrats, historically" but in 2022 began supporting Republicans, with his views becoming more right-wing. In 2016, prompted by the emergence of artificial intelligence, Musk has voiced support for a universal basic income; he additionally backs direct democracy and has stated he thinks the government on Mars will be a direct democracy. He supported targeting an inclusive tax rate of 40%; prefers consumption taxes to income taxes; and supports the estate tax, as the "probability of progeny being equally excellent at capital allocation is not high." In an interview with The Washington Post, Musk stated he was a significant donor to Democrats and also gives heavily to Republicans. Musk further stated that political contributions are a requirement in order to have a voice in the United States federal government. In 2019, Musk tweeted in support of the Democratic presidential candidate Andrew Yang, agreeing that universal basic income was required. The following year, Musk voiced support for Kanye West's independent run for president. Musk at the time described the United States as "[inarguably] the greatest country that has ever existed on Earth", describing it as "the greatest force for good of any country that's ever been." Musk believes democracy would not exist any longer if not for the United States, saying that it prevented this disappearance on three occasions through its participation in World War I, World War II, and the Cold War, while believing the country is not perfect and has made many mistakes. September 2, 2021 In 2021, in response to Texas governor Greg Abbott saying that Musk supported Texas' "social policies", Musk said he believed government "should rarely impose its will upon the people". The following year, Musk said that he could "no longer support" the Democrats, saying that "they have become the party of division & hate" and would be voting Republican due to Biden's support for unions and his inability to "get a lot done". In June 2022, Musk voted for Mayra Flores in a special election, stating it was the first time he ever voted Republican, while also considering Ron DeSantis in the 2024 U.S. presidential election. In November, Musk clarified he would support DeSantis if he chose to run. In January 2024, Musk participated in a forum with Bill Ackman and Democratic presidential primary challenger, Representative Dean Phillips regarding his presidential bid. During the forum, after hearing about the various challenges the Democratic Party presented to Phillips's campaign, Musk denounced the process of removing candidates from ballots as being "fundamentally anti-democratic". In July 2024, Musk called Kamala Harris an "extinctionist" due to comments about young people being anxious about having kids due to climate change. February 7, 2025 Musk criticized Donald Trump prior to his first presidency in 2016 and the two feuded in 2022, as well as subsequent years. In 2024 there flourished what was described by The Independent as a "rapid and intense bromance between two of the world's most powerful men." In February 2025, Musk publicly stated he loved Trump as "a straight man", before feuding again with President Trump in June. Before the election of Donald Trump as president of the United States in November 2016, Musk criticized Trump by saying he was "not the right guy" and did not have the "character that reflects well on the United States". Following Trump's inauguration in January 2017, Musk accepted an invitation to participate in two councils advising the president, and also criticized Trump's travel ban, regarding "citizens from certain primarily Muslim countries". In June, a few months later, he resigned from both business advisory councils in protest of Trump's decision to withdraw the United States from the Paris Agreement on climate change, stating: "Climate change is real. Leaving Paris is not good for America or the world". In May 2020, amidst Musk's restarting of Tesla assembly plant production during the COVID-19 pandemic, Trump tweeted in support of Musk, which Musk publicly thanked him for. According to Walter Isaacson's biography of Musk, he reportedly did not vote in the 2020 presidential election since he believed that it was a waste of time to vote due to California being an uncontested state. July 12, 2022 When Elon Musk came to the White House asking me for help on all of his many subsidized projects, whether it's electric cars that don't drive long enough, driverless cars that crash, or rocketships to nowhere, without which subsidies he'd be worthless, and telling me how he was a big Trump fan and Republican, I could have said, 'drop to your knees and beg,' and he would have done it. In July 2022, Trump referred to Musk as a "bullshit artist" and called Musk's contract with Twitter "rotten". Musk responded by describing Trump as being too old for the presidency, instead favoring Ron DeSantis for the 2024 presidential election. Afterwards, Trump stated on Truth Social that Musk had come to the White House requesting help with subsidized projects and that had he been asked to beg, "he would have done it"; Trump also said on Truth Social that "Now Elon should focus on getting himself out of the Twitter mess because he could owe $44 billion for something that's perhaps worthless. Also, lots of competition for electric cars!". In 2022, after Trump's Twitter suspension was reversed, Musk told Isaacson about Trump that "he's disruptive. He's the world's champion of bullshit." In 2024, New York Magazine described the feud over the past few years as "on-again, off-again". @realDonaldTrump is in the Epstein files. That is the real reason they have not been made public. June 5, 2025 A feud between Musk and Trump occurred in June 2025 following Musk's exit from the second Trump administration with his criticisms of the One Big Beautiful Bill Act. Musk described the bill as a "disgusting abomination" and alleged Trump had ties to sex offender Jeffrey Epstein. In July 2024, Musk endorsed Donald Trump shortly after the attempted assassination in Pennsylvania, and it was reported that he pledged the commitment to a pro-Trump super PAC on a monthly basis, making Musk the single largest individual donor to Trump's campaign. In September 2024, following another attempted assassination of Trump, Musk received backlash after posting the now-deleted tweet: "And no one is even trying to assassinate Biden/Kamala". The following month, at a rally in Butler, Pennsylvania, Musk declared the presidential election crucial for preserving democracy, stating that Donald Trump was the only candidate capable of achieving this. Wearing a black "Make America Great Again" cap, he warned that if Trump lost, it might be the last election, marking his first appearance at a Trump event. Musk positioned Trump as a champion of free speech, and accused Democrats of threatening various rights, including the right to vote. In December 2024, The Washington Post reported that Musk had donated $277 million to Trump and allied Republicans, making him the single largest individual political donor in the 2024 election and the largest donor since at least 2010, not counting candidates who funded their own campaigns, according to data from OpenSecrets. The Post described Musk as being referred to by some Republicans as "the Soros of the right". The concept of the Department of Government Efficiency (DOGE), a department for streamlining government efficiency, emerged in a discussion between Musk and Trump, and in August 2024, Trump committed to giving Musk an advisory role, with Musk accepting the offer. Musk was described as having more of a "technology approach", according to Vivek Ramaswamy, who was originally intended co-chair the department alongside Musk. In November 2024, he suggested that the organization could help to cut the U.S. federal budget, consolidate the number of federal agencies, and eliminate the Consumer Financial Protection Bureau. The following month, he described the final stage of DOGE as "deleting itself". While his official role is not clear, he was given "special government employee" status, with the organization created by executive order in January 2025. Soon after, Musk was criticised for his treatment towards employees, prioritized secrecy within the organization, and accused others of violating privacy laws, stating "Don't mess with DOGE" on X. March 5, 2022 Musk calls himself "a free speech absolutist", identifying his definition of free speech as "that which matches the law", while advocating that corporate censorship of speech should not go significantly beyond minimum legal requirements. He has attempted to silence some critics' speech, including journalists and non-profit organisations, and engaged in censorship on behalf of Twitter. I believe in its potential to be the platform for free speech around the globe, and I believe free speech is a societal imperative for a functioning democracy. However, since making my investment I now realize the company will neither thrive nor serve this societal imperative in its current form. Twitter needs to be transformed as a private company. In April 2022, Musk made an offer to buy Twitter, believing that "free speech is a societal imperative for a functioning democracy". Since Musk's acquisition of Twitter, the platform has increased its approval of censorship requests by governments. During the 2023 Turkish presidential election, Twitter limited access to content in Turkey, including critics of incumbent president Recep Tayyip Erdoğan, political opponents, and journalists. Musk defended this move by stating that the alternative would have been to "throttle [Twitter] in its entirety", and said it was normal for Internet companies to do. Twitter has also censored tweets and blocked accounts that are critical of India's prime minister Narendra Modi and his Bharatiya Janata Party, with Musk stating that Twitter is left with no choice but to "obey local government", as a believer in upholding lawful censorship requests. Twitter has filed strategic lawsuits against public participation for some U.S. critics, and it is facing a speech-related case involving a critic in Germany. Musk has also called for several of his critics to be criminally prosecuted. April 22, 2022 According to Musk, the alt-tech platform Truth Social[b] exists because of censorship on Twitter. In May 2022, Musk called Twitter's decision to ban Trump "morally wrong", announcing he would reverse Trump's ban when after purchasing Twitter. In November 2022, Musk tweeted that he was so committed to free speech that he would not ban @ElonJet, a Twitter account that tracked the publicly available real-time flight data of Musk's private plane. Musk reversed his position the following month, banning the account and several journalists who had reported on it, accused them of doxxing, and threatening legal action. He has also refused to block Russian state media on SpaceX's Starlink satellites in response to Russia's invasion of Ukraine. In February 2025, Tesla fired a manager who had been openly critical of Musk, a move seen at odds with Musk's purported free speech views. In March 2025, Musk pressured Reddit CEO Steve Huffman to prevent subreddits from banning links to Twitter and ban subreddits critical of the Trump administration, leading to the r/WhitePeopleofTwitter subreddit being banned for 72 hours. In an interview, Musk said he would be working with the Trump administration to "go after" people "pushing the lies" about Tesla. In the aftermath of the Uvalde school shooting in 2022, Musk supported strict background checks on all gun purchases and limiting the sale of assault rifles to those living in "high risk" locations with issues such as "gang warfare" and to owners of gun ranges. Believing in a special permit and vigorous vetting, Musk has said that he firmly believes "that the right to bear arms is an important safeguard against potential tyranny of government. Historically, maintaining their power over the people is why those in power did not allow public ownership of guns". Having previously been described as a "Silicon Valley libertarian", in late 2022, The Atlantic wrote that Musk was "a right-wing activist" who was aiding the far-right, and "appears deeply committed to the right's culture war against progressivism in most forms", while Musk affirmed he was a centrist. The magazine described his activism as being "personally motivated", as opposed to ideologically motivated. A year later, the New Statesman described his libertarianism as being "infused with authoritarian tendencies". In July 2024, Bloomberg declared Musk was "going all in on right-wing politics" and embracing the conservative movement. In October, a CNN reporter described Musk as finding Trump's authoritarian leanings appealing, and a month later, The Spectator credited Musk with bringing "the techno-libertarian elite, a small but very wealthy group, into Trump's largely blue-collar, industrial and conservative base", thus increasing the support base. In early 2025, The Conversation analysed Musk's path towards far-right politics within the context of "the libertarian to alt-right pipeline"[c] and the shift of the Libertarian Party to the right. The magazine stated that "he remains a limited-government libertarian", and that his online personality is "part of a deliberate alt-right populist strategy to stoke controversy", intended to disturb the left and claim persecution when criticized. Wired opined that Musk had become "the hero of America's far-right movement", and had become paramount within far-right community discussions. Jacobin defined his politics as libertarian authoritarianism,[d] based on his political activities combining "authoritarian nationalism with a distinctive postmodern, libertarian streak". The magazine attributed his transition into a "chief amplifier of global authoritarianism", based on his past criticisms of Black Lives Matter, diversity, equity and inclusion, and "wokeness", describing Musk as "the first truly global oligarch". Al Jazeera reported that although Musk was supported by some for his salute, his public persona remains libertarian; described as passionately protesting against regulation, government waste, and "freeing the potential of the market and of individuals". Political scientist Jean-Yves Camus argued that Musk is not a Nazi, and alongside Trump, is "self-serving rather than ideological" who instead favours an autocracy, and The Guardian hypothesised that his "closeness with rightwing populist parties" may be of benefit to his businesses. The Nation warned that Musk has raised "the specter of massive corruption and authoritarianism to an immediate threat", after U.S. Senator Bernie Sanders described Trump and Musk's attempts to restructure the federal government as "the growth of oligarchy", and part of the shift towards authoritarianism. Musk has regularly criticized American and European immigration policies. An immigrant himself, he is described as being "anti-immigration" and has distributed false information regarding immigration and voter fraud, promoted misleading narratives, and engaged in misinformation. Since the inauguration of the Biden administration in 2021, Musk has expressed various disapprovals of its immigration policies, regularly criticizing illegal immigration and the crimes allegedly committed by them, and has promoted the theory that an increase in illegal immigration is the alleged goal of "importing voters". Musk clarified his opinion that votes are coming from counting unauthorized immigrants during the census, which shifts the proportion of seats in the House of Representatives toward states with large number of undocumented immigrants, with such states predominantly voting for Democrats. Analysis from Bloomberg described his posts on the topic as those that "primarily promote misleading narratives", and helps amplify Trump's policies on immigration. BBC Verify reported that Musk's engagement with misinformation on the subject was a "key theme" since endorsing Trump in July 2024, and The Washington Post likened the imported voters theory as being "adjacent rhetoric" to the "great replacement" conspiracy theory. That year, Musk reached over one thousands tweets and over 10 billion views on the topic of immigration and voter fraud, which became his most tweeted topic. In September 2023, Musk livestreamed a visit to the Texas border with Mexico during an influx in migrant arrivals. Musk called for improving the immigration system to allow more "hard-working and honest" migrants, while also stopping illegal migrants who are breaking the law. That same month, Musk retweeted a video that showed a non-governmental organization working to assist migrants in the Mediterranean with the caption about Germany NGO ships "collecting illegal immigrants to be unloaded in Italy". Musk's retweet bore the caption "Is the German public aware of this?" to which the German Foreign Ministry responded "Yes. And it's called saving lives." Musk responded to the Foreign Ministry declaring that Germany had violated sovereignty with the remark "Has invasion vibes". The main function of the H-1B visa program is not to hire "the best and the brightest", but rather to replace good-paying American jobs with low-wage indentured servants from abroad. January 2, 2025 Musk has defended the use of H-1B visas to attract highly skilled workers to the U.S, having once been on the same visa. In December 2024, during a period of online discussion on whether H-1B visas should be reformed, he said that Silicon Valley firms need foreign workers (via H-1B) because there are not enough "super motivated" and "super talented engineers" in America. This was controversial and drew criticism from opponents of immigration who believe that importing foreign workers would negatively impact American workers, and the debate was dubbed the "MAGA Civil War". U.S. Senator Bernie Sanders criticised Musk's stance, viewing it as the importation of cheap labour that benefits billionaires. After multiple United States federal judges ruled against the Trump administration's actions, Musk in February 2025 proposed "an immediate wave of judicial impeachments". Musk in March 2025 declared: "It's like any federal judge can stop any action by the President of the United States. This is insane, and this has got to stop … at the federal level and at the state level". Following the killing of Iryna Zarutska in Charlotte, North Carolina in August 2025, Musk criticized judges and district attorneys for allowing "criminals to walk free." I disagree with the idea of unions. I just don't like anything which creates a lords and peasants sort of thing. I think the unions naturally try to create negativity in a company. Musk has been critical of trade unions. In December 2023, Musk commented that he disagreed with "the idea of unions", describing a "lords and peasants" scenario. In 2018, Musk tweeted "Nothing stopping Tesla team at our car plant from voting union ... But why pay union dues & give up stock options for nothing?" while the United Auto Workers (UAW) union was campaigning at Tesla, in the Fremont Factory in California. In February 2023, following racist comments from cartoonist Scott Adams in which he described Black people as a hate group and encouraged racial segregation, Musk opined that the media was being racist against Whites and Asians. Musk has amplified false claims of white genocide in South Africa. I'll say what I want, and if the consequence of that is losing money, so be it, [...] In May 2023, Musk attacked George Soros on Twitter after the investor sold a small stake in Tesla, comparing Soros to the Jewish supervillain Magneto. In his defence, Musk stated he believes Soros wanted to "erode the very fabric of civilization". Musk's comment was criticized as being antisemitic by the Anti-Defamation League (ADL), noting that Soros had long been the target of conspiracy theories, and by a member of the Israeli Foreign Ministry. He was also defended by a minister of Israeli's Ministry of Diaspora Affairs, who deemed the post as not being antisemitic. Musk later denied being antisemitic and described himself as a "pro-Semite". In August 2023, Musk criticized the "Kill the Boer" song which was sung by Julius Malema during a rally for the far-left South African political party Economic Freedom Fighters, asserting that the song advocated the genocide of white people, which was rejected by Malema. A month later, Musk assured Benjamin Netanyahu that he was against antisemitism. Musk discussed the issues online with a panel of right-leaning Jewish leaders including former Israeli president Reuven Rivlin, attorney Alan Dershowitz, who represented Donald Trump in his first impeachment trial, as well as several Rabbis including Shmuley Boteach, where Musk denied allegations of antisemitism and cited the suspension of Kanye West as an example of enforcement on his platform. The group also criticized the ADL's criticism of Musk. If somebody is going to try to blackmail me with advertising, blackmail me with money, go fuck yourself. Go fuck yourself. Is that clear? I hope it is. In November 2023, Musk posted a response in which he expressed his agreement with an antisemitic tweet in which Jews were described as promoting "hatred against whites", writing "You have said the actual truth." Following this, Musk said it was "super messed-up" that white people are not "allowed to be proud of their race." He was condemned by the White House for his post, described as a "hideous lie". Musk later acknowledged the tweet as a mistake, saying "I handed a loaded gun to those who hate me and to those who are antisemitic and for that I am quite sorry" and described his tweet as very foolish. Musk stated that he doesn't believe that "all Jewish communities" promote dialectical hatred towards white people and that he was "deeply offended" by the ADL, while denouncing what he described as "anti-white racism or anti-Asian racism or racism". He also tweeted that his criticism of Jews applies to more groups than just the ADL. At the DealBook Summit, journalist Andrew Ross Sorkin questioned Musk about the withdrawal of advertisers from X following his recent posts, and Musk responded denouncing advertisers of blackmail and stated "Go fuck yourself". In August 2024, Musk ignited a controversy after he shared an allegedly Islamophobic meme. He subsequently feuded with First Minister of Scotland Humza Yousaf, who described him as "one of the most dangerous men on the planet" and a "race baiter" who should be held to account. Musk responded that Yousaf is a racist "scumbag" who "loathes white people". In January 2025, at a campaign event which was staged by the German far-right political party Alternative for Germany, Elon stated that "There is too much focus on past guilt, and we need to move beyond that". That same week, Musk was criticized for a controversial gesture that was interpreted by some as a Nazi salute, which he made during Trump's inauguration, his comments about past guilt were condemned by the chairman of Israel's official memorial to Holocaust victims. In January 2026, Musk reshared a tweet about "white solidarity" and on the same day, he claimed states like California are using immigrants to create a “one-party state.” In 2018, Musk shared a post by Tesla, about the company's ranking on the Corporate Equality Index; Tesla stated, "Thanks to everyone at Tesla for making LGBTQ inclusion an important part of our culture." Musk commented, in reply to another user, "Don't buy our car if that's a problem. People should be free to live their lives where their heart takes them". In 2022, Musk reaffirmed those comments, and also posted, "Tesla scores 100/100 for 7th year in a row for LGBTQ equality" on the Corporate Equality Index. Following Musk's takeover of Twitter in October 2022, the platform has seen an increase in hate speech toward the LGBTQ community, for which he has received criticism. Musk said of gay people in March 2024, "My observation is that people are born one way or another – it is not a choice. People should find mutual love and happiness where their heart leads them. I only ask of my gay friends that they have children for the continuance of civilization." In July 2024, Musk said that a California law which bans teachers from being required to report a change in a child's gender identity or sexual orientation was the "final straw" in deciding to move the headquarters of SpaceX and Twitter from California to Texas. Musk's views on transgender issues have provoked controversy, leading to being characterized as transphobic. December 16, 2020 In July 2020, Musk made headlines when he tweeted "Pronouns suck." The tweet was interpreted by The Independent as a slight to preferred gender pronouns, and was criticized by many, including LGBTQ advocacy group Human Rights Campaign and Musk's then partner Grimes. In a later tweet, Musk stated he supported "trans", but that pronouns are "an esthetic nightmare". In December 2022, Musk again mocked preferred gender pronouns in a tweet that read "My Pronouns are Prosecute/Fauci." In a 2023 interview, Grimes said she discussed transgender topics with Musk at length. She recounted that Musk's views appeared to her to stem from "hate [of] woke culture" and his "concerns about the fertility thing"; Grimes said to him that "fertility tech … could be innovated that would help trans people". Musk stated in 2024 that he personally does use people's preferred gender pronouns, from a "standpoint of good manners". In 2020, Musk's daughter, Vivian Wilson, underwent a gender transition. Wilson changed her name, and no longer wished to be associated with her father. Walter Isaacson, who wrote a 2023 authorized biography of Musk, stated that Musk was "generally sanguine" when he initially discovered Wilson was transgender, "but then Jenna[e] became a fervent Marxist and broke off all relations". However, Isaacson's book states that due to disagreements about capitalism, Musk and Wilson were already "estranged" before Musk knew she was transgender. Isaacson wrote that Musk became politically more right-leaning in 2021, "partly triggered by his daughter Jenna's transition, her embrace of radical socialist politics, and her decision to break off relations with him." (Wilson said this was inaccurate for multiple reasons, e.g. that she opposes wealth inequality but is not Marxist.) According to Isaacson's book, Musk said that "she went beyond socialism to being a full communist and thinking that anyone rich is evil. … I've made many overtures but she doesn't want to spend time with me." June 21, 2023 In April 2023, Twitter quietly removed a policy prohibiting targeted deadnaming and misgendering of transgender users. This policy was reintroduced in 2024, however, Musk said it would be sparingly enforced, to reduce visibility of posts considered to be "repeated, targeted harassment of a particular person." In June 2023, Musk deemed the word cisgender a slur, stating that it violated Twitter's conduct policy. That same month, What Is a Woman?, a controversial documentary about transgender issues that was initially flagged by Twitter as hate speech, went viral after Musk personally promoted it and pinned it to his profile. Musk has also expressed opposition to gender-affirming care for minors and has stated he will be "actively lobbying to criminalize" such care. In July 2024, Musk said his daughter's gender dysphoria was related to being "born gay and slightly autistic"; he said he gave parental consent for her transition at the age of 16, but that he was "essentially tricked" into doing so. (Wilson disputes this, saying Musk was "not by any means tricked" but rather gave informed consent; she has also come out as bisexual rather than gay.) January 11, 2024 In January 2024, Musk declared that cisgender is a "heterophobic" word. PinkNews argued that it does not refer to heterosexual people. Science and technology January 21, 2025 Musk considers artificial intelligence to be one of the most significant threats to the human race, has received considerable criticism for his comments and actions related to the COVID-19 pandemic, supports the colonization of Mars, favors individualized transport over public transport, and has opposed banning TikTok. Musk has also been highly critical of Wikipedia; describing the encyclopedia as "woke", controlled by the mainstream media and far-left activists, and has called for its defunding. Musk has frequently spoken about the potential dangers of artificial intelligence (AI), declaring it as "the most serious threat to the survival of the human race". During a 2014 interview at the MIT AeroAstro Centennial Symposium, Musk described AI as humanity's largest existential threat, stating his belief in the need for regulatory oversight. Musk invested in DeepMind, an AI firm, and Vicarious, a company working to improve machine intelligence, and was formerly co-chairman of OpenAI as a co-founder. Musk later criticized OpenAI for becoming closed-sourced and for-profit, and interpreted its chatbot ChatGPT of political bias. In March 2023, he signed an open letter calling for a pause on large-scale AI experiments, citing profound risks for society. The president of the Information Technology and Innovation Foundation (ITIF), Robert D. Atkinson, argued that Musk and others stating that AI is the "largest existential threat to humanity" is "not a very winning message if you want to get AI funding out of Congress to the National Science Foundation." I like to just keep an eye on what's going on with artificial intelligence. I think there is potentially a dangerous outcome there. There have been movies about this, you know, like Terminator, [...] In 2014, Musk expressed his concerns referencing Terminator, stating "we should try to make sure the outcomes are good, not bad". In 2015, as an advisor to the nonprofit Future of Life Institute, an organization focused on advanced technologies, Musk donated $10 million. The following year, when asked whether he thinks humans live in a computer simulation, perhaps controlled by a vast AI, Musk stated that "the odds that we're in 'base reality' is one in billions." Harvard physicist Lisa Randall disputed this arguing there was "no real evidence" of a simulation. At the 2019 World AI Conference, Musk contended that "computers are already smarter than human beings" and that this alone was reason for caution regarding AI.: 39 Musk warned of unintended consequences of AI and stated that immediate steps should be taken to prevent disaster.: 39 Musk's opinions about AI have provoked controversy and have been criticized by experts such as Yann LeCun, who contended that Musk's panic was influenced by reading Nick Bostrom's book Superintelligence, and by Musk's attraction to the idea that he will save humanity. Facebook's head of AI said that Musk was ill-informed about AI and noted that his comments about a future machine takeover distracts people from real, immediate AI concerns, such as algorithms exacerbating inequality. Consequently, according to CNBC, Musk is "not always looked upon favorably" by the AI research community. Mark Zuckerberg has clashed with Musk on the issue and called his AI warnings "pretty irresponsible". In November 2024, while speaking at the AI Safety Summit in London, attended by world leaders and tech figures, Musk applauded the Prime Minister Rishi Sunak for hosting the event. In doing so, he reiterated his concerns that the intelligence is "potentially the most pressing [existential risks] that we face", while anticipating that it would become "far more intelligent" than human beings. March 19, 2020 Musk has received criticism over his views and actions related to the COVID-19 pandemic. In early 2020, Musk referred to COVID-19 as a "specific form of the common cold", stated that "the coronavirus panic is dumb", and that the "danger of panic still far exceeds danger of corona imo [in my opinion]. If we over-allocate medical resources to corona, it will come at expense of treating other illnesses". Musk has additionally been criticized for tweeting contentious comments on the disease, including that "Kids are essentially immune, but elderly with existing conditions are vulnerable", and for speculating that the pandemic would soon be ending according to "current trends". In addition, he promoted articles which suggested that healthcare companies were inflating COVID-19 case numbers for financial reasons. When the Alameda County Sheriff ordered all non-essential businesses to shut down, Musk and Tesla initially refused to comply, arguing that vehicle manufacturing and energy infrastructure are critical sectors, citing the U.S. Department of Homeland Security. Musk called the lockdown "fascist" on a Tesla earnings call, comparing the restrictions to forced imprisonment, and later sent out numerous tweets opposing mandatory lockdowns such as "FREE AMERICA NOW." In March 2020, in response to a request to repurpose the Tesla factory to make urgently needed ventilators, Musk promised that Tesla would make ventilators "if there is a shortage". When Nate Silver responded that there was a current shortage, Musk replied, "Ventilators are not difficult, but cannot be produced instantly." After figures such as New York City mayor Bill de Blasio highlighted their hospitals' ventilator shortage and responded to Musk's offer, Musk said he thought the ventilators which Tesla was working on would probably be unneeded. A week later, Musk received widespread requests from dignitaries around the world, including the Ukrainian Health minister, Bolivia's Ambassador for Science and Technology to Silicon Valley, and Nigeria's Ministry of Finance. When asked about what they received from Musk, California hospital representatives noted that they received CPAP machines made by ResMed instead and not "full ventilators", though expressed gratitude. May 11, 2020 In May 2020, Musk reopened Tesla's Fremont production line in defiance of and in violation of Alameda County's orders, and tweeted that "If anyone is arrested, I ask that it only be me." Musk also announced that Tesla would be moving its headquarters to Texas or Nevada and that Tesla had filed a lawsuit against Alameda County challenging its "shutdown" of the Fremont factory; the suit was subsequently withdrawn. The Alameda County Public Health Department explained it was waiting on a plan that Tesla had promised to provide by May 11 that would walk through how it would protect workers' health during the COVID-19 pandemic. An opening date of Monday, May 18 had been penciled in for Tesla, pending approval — the same date that Fiat Chrysler, Ford Motor Company, and General Motors were also due to restart production. November 14, 2020 In November 2020, the phrase "Space Karen" began to trend on Twitter after a scientist referred to Musk as such, over comments Musk made questioning the effectiveness of COVID-19 testing. Musk was also said to have spread misinformation about the virus by virologist Angela Rasmussen. with Musk referring to the virus as "a type of cold". The following month, Politico named Musk's prediction that there would be "close to zero new cases" as one of "the most audacious, confident and spectacularly incorrect prognostications about the year". Two years later, Musk tweeted "My pronouns are Prosecute/Fauci", drawing attention from US lawmakers. In February 2023, he praised anti-vaccine comments made by Woody Harrelson during Saturday Night Live. In February 2025, Musk claimed during an interview with Fox News' Sean Hannity that International Space Station (ISS) crew Suni Williams and Butch Wilmore "were left up there for political reasons, which is not good." This claim was challenged by former ISS commander Andreas Mogensen which caused Musk to attack Mogensen calling him an "idiot" and "fully retarded". Mogensen responded to the attack saying "Elon, I have long admired you and what you have accomplished, especially at SpaceX and Tesla. You know as well as I do, that Butch and Suni are returning with Crew-9, as has been the plan since last September. Even now, you are not sending up a rescue ship to bring them home. They are returning on the Dragon capsule that has been on ISS since last September." Mogensen received the support of fellow astronauts brothers Mark Kelly and Scott Kelly, Musk responded saying that Mogensen had attacked him "despite having no idea what ACTUALLY happened." and by posting on X at Scott Kelly "Btw, your brother claims to be independent, but is just a Dem donor shill." Musk's innaccurate claim that Williams and Wilmore had been abandoned by the Biden administration was repeated by President Trump. Following the digital dispute, Musk argued that the ISS should be deorbited early and that the funds should be redirected to Mars exploration. Musk clarified that his view was that "The decision is up to the President, but my recommendation is as soon as possible. I recommend 2 years from now," July 27, 2021 Musk has long been an advocate for space colonization, especially the colonization of Mars. As early as 2001, Elon became involved with the nonprofit Mars Society and has repeatedly pushed for humanity colonizing Mars, in order to become an interplanetary species and lower the risks of human extinction. In 2002 he left the society and began focusing on his own initiatives, and later envisioned establishing a direct democracy on Mars, with a system in which more votes would be required to create laws than remove them. Concerned with human population decline, Musk has described becoming "a multiplanet civilization". Musk has also cited the expansion of the sun as a reason for colonizing mars. Musk has been highly critical of the F-35 program. He has also been critical of crewed aircraft in general declaring that "The fighter jet era has passed." at the Air & Space Forces Association's 2020 Air Warfare Symposium and writing "manned fighter jets are obsolete in the age of drones anyway. Will just get pilots killed." in 2024. At a Tesla event on the sidelines of the Conference on Neural Information Processing Systems in December 2017, Musk expressed his disappointment with public transport, citing the timing and locations for reasons why "everyone doesn't like it", suggesting this was why people prefer "individualized transport" instead. Afterwards, he dismissed an audience member's response that public transportation functioned effectively in Japan. His comments sparked widespread criticism from both members of the public and transit experts. Urban planning expert Brent Toderian started the hashtag #GreatThingsThatHappenedonTransit, which was widely adopted by Twitter users to dispel Musk's notion that everyone hated public transport. Yonah Freemark, an urbanist and journalist specializing in planning and transportation, summarized Musk's views on public transport as being terrible. Jarrett Walker, a public transport expert, said that "Musk's hatred of sharing space with strangers is a luxury (or pathology) that only the rich can afford", referring to the theory that planning a city around the preferences of a minority yields an outcome that usually does not work for the majority. Musk responded with "You're an idiot", then specified "sanctimonious idiot". The exchange received a significant amount of media attention and prompted Nobel laureate Paul Krugman to criticise the controversy. In April 2023, Musk said he opposed banning TikTok in the United States, arguing that a ban would increase Twitter's active user base. In 2024, Musk opposed Australian plans to fine social media sites which enabled misinformation on their platforms, and to limit social media access for those under 16, with Musk commenting that it "Seems like a backdoor way to control access to the Internet by all Australians." In 2019, Musk described his Wikipedia article as "insane" and described it as a "war zone". In 2020, he encouraged his Twitter followers to "trash" the page, which led to the article being protected. In 2021, he wrote that he was glad Wikipedia existed. In April 2022, Musk tweeted: "They say history is written by the victors, but not on Wikipedia if the losing party is still alive & has lots of time on their hands!", in a reference to the article of Tesla Inc. co-founder Martin Eberhard. December 17, 2022 Musk responded to the December 2022 Twitter suspensions Wikipedia entry by proclaiming the site was "controlled by the MSM [mainstream media]", and that this makes it untrustworthy. In response, the Wikimedia Foundation changed a message appealing for donations to "Wikipedia is not for sale", stating "there is no danger that someone will buy Wikipedia and turn it into their personal playground". October 26, 2024 In October 2023, Musk criticized Wikipedia as "inherently hierarchical" and being "subject to the biases of higher ranking editors." In response to the Wikipedia funding appeal, Musk offered $1 billion in funding if Wikipedia changed its name to "Dickipedia". In October 2024, Musk stated the website was "controlled by far-left activists", discouraged donations, and characterized the online encyclopedia using the phrase "woke mind virus". In January 2025, Musk called for Wikipedia to be "defunded" and referred to it as "legacy media propaganda", in response to his Wikipedia article being edited to describe the alleged "Nazi salute" he gave during a speech after the second inauguration of Donald Trump. Wikipedia co-founder Jimmy Wales responded by saying: "If Elon wanted to help, he'd be encouraging kind and thoughtful intellectual people he agrees with to engage." Le Monde and the Agence France-Presse described Wikipedia as being a "natural adversary to X": In March 2025, Margaret Talbot wrote an article in The New Yorker dealing with the topic: "Elon Musk Also Has a Problem with Wikipedia". Talbot connected Musk's documented promotion of misinformation and his attacks against "mainstream media" with his admiration for "radical-right populism", citing how a study connected such conservative views with the "propensity to spread misinformation": International relations Musk's comments and actions have received condemnation from some of the governments and leaders for his involvement in European politics, including UK Prime Minister Keir Starmer, President of France Emmanuel Macron, Chancellor of Germany Olaf Scholz, and Prime Minister of Norway Jonas Gahr Store. He has been critical of Israel's actions in the Gaza Strip during the Gaza war, praised China's economic and climate goals, suggested that Taiwan and China should resolve Cross-strait relations in China's favor, and was described as having a close relationship with the Chinese government. In Europe, Musk expressed support for Ukraine in 2022 during the Russian invasion, but later backtracked, recommending Ukraine cede its Russia-occupied territories, often mocking Zelensky, and supported the far-right Alternative for Germany in Germany in 2024. Regarding British politics, Musk blamed the 2024 UK riots on mass migration and open borders, criticized Starmer for what he described as a "two-tier" policing system, suggested British politician Jess Phillips should be imprisoned, and that Starmer was complicit in child sexual exploitation. Musk was subsequently invoked as being responsible for spreading misinformation and amplifying the far-right. He has also voiced his support for far-right activist Tommy Robinson and pledged electoral support for Reform UK. In February 2026, Musk described Spanish Prime Minister Pedro Sánchez as a "tyrant" following Sánchez's proposal to prohibit users under the age of 16 from accessing social media. Conspiracy theories May 9, 2023 In November 2022, Musk shared a right-wing fake news website which promoted a conspiracy theory about the attack on Paul Pelosi. The following year, in the wake of a mass shooting at an outlet mall in Allen, Texas, Musk baselessly tried to cast doubt on evidence collected by journalists regarding the shooter's political beliefs, describing the event as a "psyop". Musk doubled down on his denial of the evidence that the shooter was a white supremacist in a CNBC interview 10 days later. Musk also boosted a tweet promoting an antisemitic blood libel conspiracy theory about adrenochrome, frequently invoked as part of QAnon. In November 2023, Musk endorsed a tweet referencing an antisemitic conspiracy theory that "hordes of minorities" are infiltrating Western countries and that Jews are pushing hatred against white people. The White House condemned Musk's endorsement of the tweet as "unacceptable". He also shared a meme promoting the widely discredited far-right Pizzagate conspiracy theory, and after a few hours, Musk deleted the tweet. In 2025, Musk promoted the Russia investigation origins conspiracy theory about Russian interference in the 2016 elections. Finance and taxes Musk has spoken against a proposed wealth tax and said that in general he supported estate taxes. He is also opposed to Grantor Retained Annuity Trusts. In 2024 Musk called a proposal from the British government to increase estate taxes on farms valued at more than a million pounds "going full Stalin." Musk is an opponent of short-selling, has repeatedly criticized the practice, and argued it should be illegal. He has engaged with short-selling critics via social media and used Tesla merchandise as a means of mocking those who short the Tesla stock. On the topic of subsidizing renewable energy, Musk has stated that he does not believe the U.S. government should provide subsidies to companies but should instead use a carbon tax to price in the negative externality of climate change and discourage poor behavior. Musk believes that the free market would achieve the best solution, and that producing environmentally unfriendly vehicles should come with its own consequences. Musk has advocated against funding for charging stations in the Infrastructure Investment and Jobs Act, maintaining that oil and gas subsidies should also be eliminated. Vermont Senator Bernie Sanders refuted Musk, describing his hypocrisy for receiving "billions in corporate welfare" before opposing a $2 trillion stimulus package that included provisions for specific companies and interest groups. Musk has subsequently doubled down on his stance and called for ending the US $7,500 tax credit for buyers of electric cars. Philosophy and religion August 26, 2022 Musk holds strong pronatalist views; The Guardian has characterized Musk as "The world's most famous pronatalist", and according to The Wall Street Journal, he has had at least 14 children with four women. Musk believes that vaginal delivery result in reduced skull size and as a result supports routine cesarean sections over natural births. Speaking at The Wall Street Journal's CEO Council session in 2021, Musk stated that a declining birth rate, and consequent population decline, is one of the biggest risks to human civilization. The following year, he argued that population collapse, due to low birth rates, is a superior risk to civilization than global warming, and his views on population collapse were challenged by demographers. In 2023, Musk has asserted that declining birth rates pose an existential threat to humanity and has donated ten million dollars to the University of Texas at Austin to further research on the potential risks. Musk has also argued that "smart" people in particular are not having children, a view which has been criticized as too close to eugenics. Speaking about natalism in 2024 Musk said "You've got to walk the talk, so I do have a lot of kids and I encourage others to have lots of kids." July 27, 2024 Musk was raised in the Anglican Church, in which he was baptized. In 2013, when he was asked if he thought that science and religion could co-exist, Musk replied "Probably not", and in 2017 he denounced a plan to create a religion which is based on the worship of an artificially intelligent 'Godhead'. By 2023, Musk had said that he considers himself "aspirationally Jewish", and noted the influence that his attending a Hebrew preschool had on him. The following year, Musk tweeted about Christianity, stating he is a believer in the principles of Christianity, such as love thy neighbor as thyself and turn the other cheek. He also engaged in a viral two-hour conversation with Jordan Peterson that explored various topics, including the role of Christianity in his life. During the interview, he described himself as a "cultural Christian". In 2024, Musk stated that he is a "big believer in the principles of Christianity". Notes References Further reading |
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Contents President (corporate title) A president is a leader of an organization, company, community, club, trade union, university, country or other group. The relationship between a president and a chief executive officer varies, depending on the structure of the specific organization. In a similar vein to a chief operating officer, the title of corporate president as a separate position (as opposed to being combined with a "C-suite" designation, such as "president and chief executive officer" or "president and chief operating officer") is also loosely defined; the president is usually the legally recognized highest rank of corporate officer, ranking above the various vice presidents (including senior vice president and executive vice president), but on its own generally considered subordinate, in practice, to the CEO. The powers of a president vary widely across organizations and such powers come from specific authorization in the bylaws like Robert's Rules of Order (e.g. the president can make an "executive decision" only if the bylaws allow for it). History Originally, the term president was used in the same way that foreman or overseer is used now (the term is still used in that sense today). It has now also come to mean "chief officer" in terms of administrative or executive duties. Powers and authority The powers of the president vary widely across organizations. In some organizations the president has the authority to hire staff and make financial decisions, while in others the president only makes recommendations to a board of directors, and still others the president has no executive powers and is mainly a spokesperson for the organization. The amount of power given to the president depends on the type of organization, its structure, and the rules it has created for itself. In addition to administrative or executive duties in organizations, a president has the duties of presiding over meetings. Such duties at meetings include: While presiding, a president remains impartial and does not interrupt speakers if a speaker has the floor and is following the rules of the group. In committees or small boards, the president votes along with the other members. However, in assemblies or larger boards, the president should vote only when it can affect the result. At a meeting, the president only has one vote (i.e. the president cannot vote twice and cannot override the decision of the group unless the organisation has specifically given the president such authority). Disciplinary procedures If the president exceeds the given authority, engages in misconduct, or fails to perform the duties, the president may face disciplinary procedures. Such procedures may include censure, suspension, or removal from office. The rules of the particular organization would provide details on who can perform these disciplinary procedures and the extent that they can be done. Usually, whoever appointed or elected the president has the power to discipline this officer. President-elect Some organizations may have a position of president-elect in addition to the position of president. Generally the membership of the organization elects a president-elect and when the term of the outgoing president is complete, the president-elect automatically becomes president. Immediate past president Some organizations may have a position of immediate past president in addition to the position of president. In those organizations, when the term of the president is complete, that person automatically fills the position of immediate past president. The organization can have such a position only if the bylaws provide it. The duties of such a position would also have to be provided in the bylaws. Life president Life president is an honorary title often given to someone who has already served the organization for a long period in a major role. References Further reading |
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File:Social Network Diagram (segment).svg Summary Licensing File history Click on a date/time to view the file as it appeared at that time. File usage More than 100 pages use this file. The following list shows the first 100 pages that use this file only. A full list is available. View more links to this file. Global file usage The following other wikis use this file: View more global usage of this file. Metadata This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file. |
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[SOURCE: https://en.wikipedia.org/wiki/Musk_family] | [TOKENS: 3071] |
Contents Musk family The Musk family is a prominent family with roots in South Africa, Canada, England, and the United States, whose most famous member is businessman and entrepreneur Elon Musk, the wealthiest person in the world. It also includes his parents Maye Musk, a model and author, and Errol Musk, a mine-owner, businessman and politician; siblings Kimbal Musk and Tosca Musk, and cousin Lyndon Rive. Elon Musk's ex-wives are Justine Musk and Talulah Riley, and he has many children. Maye's father Joshua N. Haldeman was a notable chiropractor, aviator, and politician who promoted technocracy and South African apartheid. Elon Musk Elon Reeve Musk (/ˈiːlɒn/ EE-lon; born June 28, 1971) is a businessman and entrepreneur known for his leadership of Tesla, SpaceX, Twitter, and xAI. Musk has been the wealthiest person in the world since 2025; as of February 2026,[update] Forbes estimates his net worth to be around US$852 billion. Born into a wealthy family in Pretoria, South Africa, Musk emigrated in 1989 to Canada; he has Canadian citizenship since his mother was born there. He received bachelor's degrees in 1997 from the University of Pennsylvania before moving to California to pursue business ventures. In 1995, Musk co-founded the software company Zip2. Following its sale in 1999, he co-founded X.com, an online payment company that later merged to form PayPal, which was acquired by eBay in 2002. Musk also became an American citizen in 2002. In 2002, Musk founded the space technology company SpaceX, becoming its CEO and chief engineer; the company has since led innovations in reusable rockets and commercial spaceflight. Musk joined the automaker Tesla as an early investor in 2004 and became its CEO and product architect in 2008; it has since become a leader in electric vehicles. In 2015, he co-founded OpenAI to advance artificial intelligence (AI) research, but later left; growing discontent with the organization's direction and their leadership in the AI boom in the 2020s led him to establish xAI, which became a subsidiary of SpaceX in 2026. In 2022, he acquired the social network Twitter, implementing significant changes, and rebranding it as X in 2023. His other businesses include the neurotechnology company Neuralink, which he co-founded in 2016, and the tunneling company the Boring Company, which he founded in 2017. In November 2025, a Tesla pay package worth $1 trillion for Musk was approved, which he is to receive over 10 years if he meets specific goals. Musk was the largest donor in the 2024 U.S. presidential election, where he supported Donald Trump. After Trump was inaugurated as president in early 2025, Musk served as Senior Advisor to the President and as the de facto head of the Department of Government Efficiency (DOGE). After a public feud with Trump, Musk left the Trump administration and returned to managing his companies. Musk is a supporter of global far-right figures, causes, and political parties. His political activities, views, and statements have made him a polarizing figure. Musk has been criticized for COVID-19 misinformation, promoting conspiracy theories, and affirming antisemitic, racist, and transphobic comments. His acquisition of Twitter was controversial due to a subsequent increase in hate speech and the spread of misinformation on the service, following his pledge to decrease censorship. His role in the second Trump administration attracted public backlash, particularly in response to DOGE. The emails he sent to Jeffrey Epstein are included in the Epstein files, which were published between 2025–26 and became a topic of worldwide debate. According to The Wall Street Journal, Musk has fathered at least fourteen children, one of whom is deceased; the sources close to Musk suggest that the "true number of Musk's children is much higher than publicly known". He met his first wife, Canadian author Justine Wilson, while attending Queen's University in Ontario, Canada; they married in 2000. In 2002, their first child Nevada Musk died of sudden infant death syndrome at the age of 10 weeks. After his death, the couple used in vitro fertilization (IVF) to continue their family; they had twins in 2004, followed by triplets in 2006. The couple divorced in 2008 and had shared custody of their children. In 2008, Musk began dating English actress Talulah Riley. They married two years later at Dornoch Cathedral in Scotland. In 2012, the couple divorced, before remarrying the following year. After briefly filing for divorce in 2014, Musk finalized a second divorce from Riley in 2016. Musk then dated Amber Heard for several months in 2017; he had reportedly been "pursuing" her since 2012. In 2018, Musk and Canadian musician Grimes said that they were dating. Grimes gave birth to Musk's seventh child in May 2020. In December 2021, Grimes and Musk had a second child together (Musk's tenth child), born via surrogacy. Despite the pregnancy, Musk confirmed reports that the couple were "semi-separated" in September 2021; in an interview with Time in December 2021, he said he was single. In March 2022, Grimes said of her relationship with Musk: "I would probably refer to him as my boyfriend, but we're very fluid." Later that month, Grimes tweeted that she and Musk had broken up again. In September 2023 it was reported that the pair had had a third child (Musk's eleventh). In October 2023, Grimes sued Musk over parental rights and custody of their eldest. In July 2022, Insider published court documents revealing that Musk had had his eighth and ninth children, twins born via IVF with Shivon Zilis, director of operations and special projects at Neuralink, in November 2021. They were born weeks before Musk and Grimes had their second child via surrogacy in December. The news "raise[d] questions about workplace ethics", given that Zilis directly reported to Musk. Zilis's third child together with Musk (his twelfth child) was born in early 2024 via surrogacy. His fourth child with Zilis was born in 2025. On February 14, 2025, Ashley St. Clair, an influencer and author, posted on Twitter claiming to have given birth to Musk's son Romulus five months earlier, which media outlets reported as Musk's supposed thirteenth child. Vivian Wilson Vivian Jenna Wilson (born April 15, 2004) is an American social media personality and member of the Musk family. The eldest daughter of Elon and Justine Musk, Wilson came out as a transgender woman in 2020, and was featured in Teen Vogue in 2025. As of March 2025, she is studying in Tokyo. X Æ A-Xii Musk X Æ A-Xii Musk (/ˈɛks eɪ.aɪ eɪ twɛlv/ or /ˈɛks æʃ eɪ twɛlv/) was born in May 2020, the eldest child of Elon Musk and Grimes. Musk and Grimes originally gave the baby the name "X Æ A-12", which would have violated California regulations because it contained characters (Arabic numerals) that are not in the modern English alphabet. They then changed it to "X Æ A-Xii". They have received criticism for choosing a name perceived to be impractical and difficult to pronounce. Elon Musk has taken X Æ A-Xii to multiple official events in Washington, D.C., during Trump's second term in office. Errol Musk Errol Graham Musk is a South African politician and businessman, who was elected as an independent to represent Sunnyside on the Pretoria City Council in 1972. Musk had a lucrative engineering business which took on "large projects such as office buildings, retail complexes, residential subdivisions, and an air force base." He also owned an auto parts store, at least half a share in an emerald mine, and even "one of the biggest houses in Pretoria". He was married to Maye Musk from 1970 to 1979. Maye's book recalls that at the time of the divorce, he owned two homes, a yacht, a plane, five luxury cars, and a truck. In the early 1990s, Errol, then aged 45, married Heide Bezuidenhout, a 25-year old he described as "one of the best looking women I've ever seen in my life". They had two children. Jana Bezuidenhout, who later became his romantic partner, was his stepdaughter from that marriage, four years old at the time Errol became her stepfather. Errol Musk's mother, Cora Amelia Robinson, was English from Liverpool, and his father, Walter Henry James Musk, was mostly English-South African. Maye Musk Maye Musk (née Haldeman; born April 19, 1948) is a model, dietitian and author. She has been a model for 50 years, appearing on the covers of magazines, including a Time magazine health edition, Women's Day, international editions of Vogue, and Sports Illustrated Swimsuit Issue. She is the mother of Elon Musk, Kimbal Musk and Tosca Musk. She holds Canadian, South African, and American citizenship. She is a registered dietitian. She published her memoir, A Woman Makes a Plan in 2019. Joshua Haldeman Haldeman was an American-born Canadian chiropractor and political activist who, in the early days of formalized apartheid, moved to South Africa. Prior to the move, Haldeman headed the Canadian branch of Technocracy movement and ran for the Parliament of Canada on the Social Credit Party ticket. Over the course of his life, he publicly expressed racist, anti-Semitic, and anti-democratic views, promoted a number of conspiracy theories, and was a supporter of South Africa's apartheid system. The Haldeman couple spent time searching for the Lost City of the Kalahari by plane. Haldeman's mother Almeda Jane (Norman) Haldeman was the first recorded chiropractor in Canada. Wyn Fletcher Winnifred Josephine Fletcher (1914–2012) was born in Moose Jaw, Canada, to English parents. Her older sister Kay Fletcher married the Canadian ice hockey player Elmer Lach. According to her son-in-law Errol Musk, Wyn and her husband Joshua Haldeman were "fanatical" in favor of apartheid, and supported Nazism. The grandmother of Elon Musk, she told Elon many stories of his grandfather's travels and exploits during his childhood, including slideshows of his trips. Walter Musk Walter Henry James Musk was a South African World War II veteran. He was from a mostly English-South African background. According to family memory he served as a cryptographer in a military intelligence unit in Egypt during World War II. He was the paternal grandfather of Elon Musk. Cora Robinson Cora Amelia Robinson was born in Edge Hill, Liverpool, to an English father and a South African mother. She moved to South Africa during World War II. Her father, from Toxteth, Liverpool, had emigrated to South Africa where he married her mother in 1911. Her mother was from a Dutch-South African background. They moved to Edge Hill and lived there until World War II. Kimbal Musk Kimbal James Musk (born September 20, 1972) is a South African restaurateur, chef, and entrepreneur. He is the brother of Elon Musk and Tosca Musk, and son of Errol and Maye Musk. He owns The Kitchen Restaurant Group, a collection of restaurants located in Colorado and Chicago. He is the co-founder and chairman of Big Green, a 501(c)(3) nonprofit that has built hundreds of outdoor classrooms called Learning Gardens in schoolyards across America. Musk is also the co-founder and chairman of Square Roots, an urban farming company growing food in hydroponic, indoor, climate controlled shipping containers. Musk currently sits on the boards of Tesla Inc. and SpaceX, both of which his brother Elon is the current CEO. He is a major shareholder in Tesla. He was on the board of Chipotle Mexican Grill from 2013 to 2019. In 1995 he co-founded, with his brother, Elon Musk, the software company Zip2, which was acquired by Compaq for $307 million in 1999. Kimbal Musk was married to Jen Lewin, with whom he established The Kitchen, from 2001 to 2010. The couple had two children together. In April 2018, he married Christiana Wyly, an environmental activist and the daughter of ex-billionaire Sam Wyly. Musk also has a daughter from another relationship. One of his children is transgender. Tosca Musk Tosca Musk (born July 20, 1974) is a South African filmmaker, who is the younger sister of Elon Musk and Kimbal Musk, and daughter of Errol Musk and Maye Musk. She is an executive producer and director of feature films, television programs, and web content. Her work includes K. Bromberg's Driven, Rachel van Dyken's Matchmaker's Playbook, and her web series, Tiki Bar TV. She co-founded the movie-streaming service Passionflix. Lyndon Rive Lyndon Robert Rive (born 22 January 1977) is a South African-American businessman known as the co-founder of SolarCity, and its CEO until 2016. SolarCity is a provider of photovoltaic systems and related services. Rive co-founded SolarCity with his brother Peter in 2006. He is a cousin of Elon Musk; his mother Kaye Rive is the twin sister of Maye Musk. Rive started his first company at age 17 before leaving his native country, South Africa. He then co-founded the enterprise software company Everdream, which was ultimately acquired by Dell. In 2010, Rive was named in the MIT Technology Review's Innovators Under 35 as one of the top 35 innovators in the world under the age of 35. Rive's parents were entrepreneurs in the natural-health business in Pretoria, South Africa. Rive has three siblings: SolarCity co-founder Peter Rive, Russ Rive who runs an art, technology, and design company in Brazil, and competitive dirt bike rider Almeda Rive [de]. References Further reading External links |
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[SOURCE: https://en.wikipedia.org/wiki/List_of_programming_languages#T] | [TOKENS: 115] |
List of programming languages This is an index to notable programming languages, in current or historical use. Dialects of BASIC (which have their own page), esoteric programming languages, and markup languages are not included. A programming language does not need to be imperative or Turing-complete, but must be executable and so does not include markup languages such as HTML or XML, but does include domain-specific languages such as SQL and its dialects. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also |
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[SOURCE: https://en.wikipedia.org/wiki/Valles_Marineris] | [TOKENS: 3003] |
Contents Valles Marineris Valles Marineris (/ˈvælɪs mærɪˈnɛərɪs/; Latin for Mariner Valleys, named after the Mariner 9 Mars orbiter of 1971–72 which discovered it) is a system of canyons that runs along the Martian surface east of the Tharsis region. At more than 4,000 km (2,500 mi) long, 200 km (120 mi) wide and up to 7 km (23,000 ft) deep, Valles Marineris is the largest canyon in the Solar System. Valles Marineris is located along the equator of Mars, on the east side of the Tharsis Bulge, and stretches for nearly a quarter of the planet's circumference. The canyon system starts in the west with Noctis Labyrinthus; proceeding to the east are Tithonium and Ius chasmata, then Melas, Candor and Ophir chasmata, then Coprates Chasma, then Ganges, Capri and Eos chasmata; finally it empties into an outflow channel region containing chaotic terrain that ends in the basin of Chryse Planitia. It has been recently suggested that Valles Marineris is a large tectonic "crack" in the Martian crust. Most researchers agree that this formed as the crust thickened in the Tharsis region to the west, and was subsequently widened by erosion. Near the eastern flanks of the rift, there appear to be channels that may have been formed by water or carbon dioxide. It has also been proposed that Valles Marineris is a large channel formed by the erosion of lava flowing from the flank of Pavonis Mons. Formation The most agreed upon theory today is that Valles Marineris was formed by rift faults, later enlarged by erosion and collapsing of the rift walls, similar to how the East African Rift was formed. The formation of Valles Marineris is thought to be closely tied with the formation of the Tharsis Bulge. The Tharsis Bulge was formed from the Noachian to Late Hesperian period of Mars, in three stages. The first stage consisted of a combination of volcanism and isostatic uplift; soon, however, the volcanism loaded the crust to a point at which the crust could no longer support the added weight of Tharsis, leading to widespread graben formation in the elevated regions of Tharsis. The second stage consisted of more volcanism and a loss of isostatic equilibrium; the source regions of the volcanism no longer resided underneath Tharsis, creating a very large load. Finally, the crust failed to hold up Tharsis and radial fractures formed, including at Valles Marineris. The third stage mainly consisted of more volcanism and asteroid impacts. The crust, having already reached its failure point, just stayed in place and younger volcanoes formed. Tharsis volcanism involved very low viscosity magma, forming shield volcanoes similar to those of the Hawaiian Island chain, but, because there is minor or no current active plate tectonics on Mars, the hotspot activity led to very long histories of repeated volcanic eruptions at the same spots, creating some of the largest volcanoes in the solar system, including the biggest, Olympus Mons. Landslides have left numerous deposits on the floor of Valles Marineris and contributed to widening it. Possible triggers of landslides are quakes caused by tectonic activity or impact events. Both types of events release seismic waves that accelerate the ground at and below the surface. Mars is much less tectonically active than Earth, and marsquakes are unlikely to have provided seismic waves of the required magnitude. Most sizable craters on Mars date to the Late Heavy Bombardment, 4.1 to 3.8 billion years ago (the Noachian period), and are older than the landslide deposits in Valles Marineris. However, three craters (including the crater Oudemans) have been identified, on the basis of their proximity and later dates, as ones whose formation may have caused some of the landslides. Hypotheses about the formation of Valles Marineris have changed over the years. Ideas in the 1970s were erosion by water or thermokarst activity. Thermokarst activity may have contributed, but erosion by water is a problematic mechanism because liquid water cannot exist in most current Martian surface conditions, which typically experience about 1% of Earth's atmospheric pressure and a temperature range of 148 K (−125 °C; −193 °F) to 310 K (37 °C; 98 °F). Many scientists however agree that liquid water flowed on the Martian surface in the past, when atmospheric conditions were different. Valles Marineris may have been enlarged by flowing water at that time. Another hypothesis by McCauley in 1972 was that the canyons formed by withdrawal of subsurface magma. Around 1989, a formation hypothesis by tensional fracturing was proposed.[by whom?] Regions of Valles Marineris Noctis Labyrinthus, on the western edge of the Valles Marineris Rift System, north of the Syria Planum and east of Pavonis Mons, is a jumbled terrain composed of huge blocks which are heavily fractured. It also contains canyons that run in different directions surrounding large blocks of older terrain. Most of the upper parts of the blocks are composed of younger fractured material thought to be of volcanic origin associated with the Tharsis bulge. The other tops are composed of older fractured material thought also to be volcanic in origin, but differentiated from the younger material by more ruggedness and more impact craters. The sides of the blocks are composed of undivided material thought to be basement rock. The space between the blocks is composed mainly of either rough or smooth floor material. The rough floor material tends to be in the eastern portion of the Noctis Labyrinthus and is thought to be debris from the walls or maybe eolian features covering rough topography and landslides. The smooth floor material is thought to be composed of fluvial or basaltic material and/or eolian features covering an otherwise rough and jumbled terrain. Terrains such as Noctis Labyrinthus are commonly found at the head of outflow channels, like the one explored by the Pathfinder mission and its Sojourner rover. They are interpreted to be a place of downward block faulting associated with the removal of ground fluid in catastrophic flood sequences. The fluid could be either carbon-dioxide ice and gas, water or lava. The hypothesis of lava involvement is associated with a proposal that Noctis Labyrinthus is directly connected to lava tubes on the slope of Pavonis Mons. In 2024, scientists found evidence that the hypothesized lava came from a volcano they dubbed Noctis Mons, which would be the seventh-highest mountain on Mars at 9,028 m (29,619 ft), and that the eastern part of its base was home to multiple glaciers with potential for hosting life, which could make it a highly valuable candidate target for astrobiology missions. Further to the east from Oudemans, Ius and Tithonium chasmata are located parallel to each other, Ius to the south and Tithonium to the north. Ius is the wider of the two, leading to Melas Chasma. Ius has a ridge down the center of it by the name of Geryon Montes, composed of the undivided basement rock. The floor of Ius Chasma is mostly composed of pristine landslide material, not much degraded by cratering or erosion. The southern wall of Ius, and to a lesser extent the northern wall, has many short valleys stretching off roughly perpendicular to the line of the chasmas. These valleys have a stubby theater-headed leading edge very much like features seen on the Colorado Plateau near the Grand Canyon that appear from groundwater sapping. (Theater-headed means that, from above, the head of the valley is a well-defined U-shape). The valley is propagated by the continued erosion and the collapse of the wall. Tithonium Chasma is very similar to Ius, except it is lacking the sapping features on the south side and contains a small portion of material that is similar to the smooth floor features except that it appears to be an ash fall that has been eroded by the wind. Between the two canyons, the surface is composed of younger fractured material - lava flows and faults from crustal extension of the Tharsis Bulge. The next portion of Valles Marineris to the east are three chasmata, that from south to north are Melas, Candor and Ophir chasmata. Melas is east of Ius, Candor is east of Tithonium and Ophir appears as an oval that runs into Candor. All three chasmata are connected. The floor of Melas Chasma is about 70% younger massive material that is thought to be volcanic ash whipped up by the wind into eolian features. It also contains rough floor material from the erosion of the canyon walls. Also, in these central chasmata there is a portion of the floor that is higher than the rest of the floor, most likely left by the continued dropping of the other floor material. Around the edges of Melas is also a lot of slide material as seen in Ius and Tithonium chasmata. The material of the floor of the canyon system between Candor and Melas chasmata is grooved. This is interpreted to be alluvial deposits and/or material that has collapsed or contracted by the removal of ice or water. There are also portions of older and younger massive floor material of volcaniclastic origin - only separated in age by crater distribution. Also there is etched massive floor material that is like the younger and older massive material except that it has wind erosion features on it. There are also a few spires of undivided material composed of the same material as the canyon walls. Further to the east, the canyon system runs into Coprates Chasma, which is very similar to Ius and Tithonium chasmata. Coprates differs from Ius in the eastern end which contains alluvial deposits and eolian material and like Ius, has layered deposits, although the deposits in the Coprates Chasma are much more well defined. These deposits pre-date the Valles Marineris system, suggesting erosion and sedimentary processes later cut by the Valles Marineris system. Newer data from Mars Global Surveyor suggest that the origin of this layering is either just a succession of landslides, one over another, volcanic in origin, or it may be the bottom of a basin of either liquid or solid water ice suggesting that the peripheral canyons of the Valles Marineris system could have been at one time isolated lakes formed from erosional collapse. Another possible source of the layered deposits could be wind-blown, but the diversity of the layers suggests that this material is not dominant. Note that only the upper layers are thin, while the bottom layers are very big, suggesting that the lower layers were composed of mass wasted rock and the upper layers come from another source. Some of this layering may have been transferred to the floor by landslides in which the layers are kept semi-intact, yet the layered section looks highly deformed with thickening and thinning beds that have multitudes of folds in them as seen in MOC image #8405. This complex terrain could also be just eroded sediment from an ancient Martian lake-bed and appear complex because all that we have is an aerial view like a geologic map and not enough elevation data to see if the beds are horizontal. Near 60° W is the deepest point of the Valles Marineris system (as well as its lowest point by elevation) at 11 km (36,000 ft) below the surrounding plateau. Eastward from here there is about a 0.03 degree slope upward before reaching the outflow channels, which means that if you poured fluid into this part of the canyon, it would form a lake with a depth of 1 km (3,300 ft) before spilling over towards the northern plains. A field of more than 100 pitted cones on the floor of Coprates Chasma has been interpreted as a set of small igneous cinder or tuff cones, with associated lava flows. Crater dating indicates they are of Middle to Late Amazonian age, about 200 to 400 million years old. Further to the east lie Eos and Ganges chasmata. Eos Chasma's western floor is mainly composed of an etched massive material composed of either volcanic or eolian deposits later eroded by the Martian wind. The eastern end of the Eos chasma has a large area of streamlined bars and longitudinal striations. This is interpreted to be stream-carved plateau deposits and material transported and deposited by flowing fluid. Ganges Chasma is an offshoot chasma of Eos in a general east–west trend. The floor of Ganges is mainly composed of alluvial deposits from the canyon walls. East of Eos and Ganges, Valles Marineris empties out into the Chryse region of the northern plains of Mars at an elevation only 1 km (3,300 ft) above the deepest point of Valles Marineris in Melas Chasma. The outflow regions of the northern plains are similar to the terrain seen at the Mars Pathfinder landing site. A terrestrial counterpart of these outflow channels on Earth would be the scablands of eastern Washington. The eastern Washington scablands are a result of repeated catastrophic flooding due to the build-up of an ice dam at the head of Lake Missoula in the Late Pleistocene. The ice dam would block the water for a while, but when it broke, the ice would float on top of the ensuing flood and vast areas would be stripped of topsoil and vegetation, leaving a large barren area of 'teardrop' islands, longitudinal grooves and terraced margins. Many of these features are also seen in Martian outflow channels, but on a larger scale. The outflow occurs successively through several regions of chaotic terrain, Aurorae Chaos and Hydraotes Chaos, and finally through Simud Valles and Tiu Valles into Chryse Planitia. See also Notes References External links |
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[SOURCE: https://en.wikipedia.org/wiki/Sarah_Friar] | [TOKENS: 473] |
Contents Sarah Friar Sarah Jane Friar OBE (born 24 December 1972) is an Irish-American business executive, who has been the chief financial officer (CFO) of OpenAI since June 2024. She was the chief executive officer of American technology company Nextdoor from 2018 to 2024 and the CFO of Block, Inc. (formerly Square, Inc.) from 2012 to 2018. Early life Born in 1972, Friar grew up in the town of Sion Mills in Northern Ireland. She attended Strabane Grammar School. Friar won a scholarship from the accounting firm Arthur Andersen after entering a competition; she then worked there for a year before pursuing engineering studies at University of Oxford. She studied metallurgy, economics, and management at Oxford, and then completed an MBA from the Stanford Graduate School of Business where she was an Arjay Miller scholar. Friar interned at Ashanti Goldfields in 1990s, during which she was assigned to work at a gold mine in Ghana. Career Friar was an analyst for McKinsey in South Africa, a managing director in equity research at Goldman Sachs, and a senior vice president of finance and strategy at Salesforce before becoming chief financial officer at Square in 2012, and then joining Nextdoor, a hyperlocal social networking service for neighborhoods, as CEO in 2018. She led the company public through a special-purpose acquisition company in 2021. Nextdoor announced Friar would step down as CEO in mid-2024. In June 2024, she joined OpenAI, the artificial intelligence research organization that develops ChatGPT, as its first CFO. Friar is on the boards of Walmart and ConsenSys, and previously sat on the boards of Slack Technologies and New Relic's boards. She also co-chairs Stanford's Digital Economy Lab and runs Ladies Who Launch, a non-profit focused on female entrepreneurs that she co-founded. She received an honorary doctorate from Ulster University in 2018. In 2019, she was granted an Order of the British Empire from Queen Elizabeth II for her commitment to entrepreneurship and financial services. Personal life Friar is married to David Riley, a former hedge fund partner. The couple has a daughter and son. She lives in Marin County, California. References |
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[SOURCE: https://en.wikipedia.org/wiki/List_of_adjectivals_and_demonyms_of_astronomical_bodies] | [TOKENS: 555] |
Contents List of adjectivals and demonyms of astronomical bodies The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies. For Classical (Greco-Roman) names, the adjectival and demonym forms normally derive from the oblique stem, which may differ from the nominative form used in English for the noun form. For instance, for a large portion of names ending in -s, the oblique stem and therefore the English adjective changes the -s to a -d, -t, or -r, as in Mars–Martian, Pallas–Palladian and Ceres–Cererian;[note 1] occasionally an -n has been lost historically from the nominative form, and reappears in the oblique and therefore in the English adjective, as in Pluto–Plutonian and Atlas–Atlantean. Many of the more recent or more obscure names are only attested in mythological or literary contexts, rather than in specifically astronomical contexts. Forms ending in -ish or -ine, such as "Puckish", are not included below if a derivation in -an is also attested. Rare forms, or forms only attested with spellings not in keeping with the IAU-approved spelling (such as c for k), are shown in italics. The suffix -ian is always unstressed: that is, /iən/. The related ending -ean, from an e in the root plus a suffix -an, has traditionally been stressed (that is, /ˈiːən/) if the e is long ē in Latin (or is from ⟨η⟩ ē in Greek); but if the e is short in Latin, the suffix is pronounced the same as -ian. In practice forms ending in -ean may be pronounced as if they were spelled -ian even if the e is long in Latin. This dichotomy should be familiar from the dual pronunciations of Caribbean as /ˌkærɪˈbiːən/ KARR-ə-BEE-ən and /kəˈrɪbiən/ kə-RIB-i-ən. Generic bodies Constellations Derivative forms of constellations are used primarily for meteor showers. The genitive forms of the constellations are used to name stars. (See List of constellations.) Other adjectival forms are less common. Sun Planets Moons Galaxies Notes References External links |
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[SOURCE: https://en.wikipedia.org/wiki/Strong_and_weak_typing] | [TOKENS: 3021] |
Contents Type safety In computer science, type safety is the extent to which a programming language discourages or prevents type errors. Type-safe languages are sometimes also called strongly or strictly typed. The behaviors classified as type errors by a given programming language are usually those that result from attempts to perform operations on values that are not of the appropriate data type, e.g. trying to add a string to an integer. Type enforcement can be static (catching potential errors at compile time), dynamic (associating type information with values at run-time and consulting them as needed to detect imminent errors), or a combination of both. Dynamic type enforcement can often run programs that would be invalid under static enforcement, but at the cost of introducing errors at runtime. In the context of static (compile-time) type systems, type safety usually involves (among other things) a guarantee that the eventual value of any expression will be a legitimate member of that expression's static type. The precise requirement is more subtle than this — see, for example, subtyping and polymorphism for complications. Definitions Intuitively, type soundness is captured by Robin Milner's pithy statement that In other words, if a type system is sound, then expressions accepted by that type system must evaluate to a value of the appropriate type (rather than produce a value of some other, unrelated type or crash with a type error). Vijay Saraswat provides the following, related definition: However, what precisely it means for a program to be "well typed" or to "go wrong" are properties of its static and dynamic semantics, which are specific to each programming language. Consequently, a precise, formal definition of type soundness depends upon the style of formal semantics used to specify a language. In 1994, Andrew Wright and Matthias Felleisen formulated what has become the standard definition and proof technique for type safety in languages defined by operational semantics, which is closest to the notion of type safety as understood by most programmers. Under this approach, the semantics of a language must have the following two properties to be considered type-sound: A number of other formal treatments of type soundness have also been published in terms of denotational semantics and structural operational semantics. Relation to other forms of safety In isolation, type soundness is a relatively weak property, as it essentially just states that the rules of a type system are internally consistent and cannot be subverted. However, in practice, programming languages are designed so that well-typedness also entails other, stronger properties, some of which include: Type-safe and type-unsafe languages Type safety is usually a requirement for any toy language (i.e., esoteric language) proposed in academic programming language research. However, many languages are too big for human-generated type safety proofs, as they often require checking thousands of cases. Nevertheless, some languages such as Standard ML, which has rigorously defined semantics, have been proved to meet one definition of type safety. Some other languages such as Haskell are believed[discuss] to meet some definition of type safety, provided certain "escape" features are not used (for example Haskell's unsafePerformIO, used to "escape" from the usual restricted environment in which input/output (I/O) is possible, circumvents the type system and so can be used to break type safety.) Type punning is another example of such an "escape" feature. Regardless of the properties of the language definition, certain errors may occur at run-time due to bugs in the implementation, or in linked libraries written in other languages; such errors could render a given implementation type unsafe in certain circumstances. An early version of Sun's Java virtual machine was vulnerable to this sort of problem. Strong and weak typing Programming languages are often colloquially classified as strongly typed or weakly typed (also loosely typed) to refer to certain aspects of type safety. In 1974, Liskov and Zilles defined a strongly-typed language as one in which "whenever an object is passed from a calling function to a called function, its type must be compatible with the type declared in the called function." In 1977, Jackson wrote, "In a strongly typed language each data area will have a distinct type and each process will state its communication requirements in terms of these types." In contrast, a weakly typed language may produce unpredictable results or may perform implicit type conversion. Memory management and type safety Type safety is closely linked to memory safety. For instance, in an implementation of a language that has some type t {\displaystyle t} which allows some bit patterns but not others, a dangling pointer memory error allows writing a bit pattern that does not represent a legitimate member of t {\displaystyle t} into a dead variable of type t {\displaystyle t} , causing a type error when the variable is read. Conversely, if the language is memory-safe, it cannot allow an arbitrary integer to be used as a pointer, hence there must be a separate pointer or reference type. As a minimal condition, a type-safe language must not allow dangling pointers across allocations of different types. But most languages enforce the proper use of abstract data types defined by programmers even when this is not strictly necessary for memory safety or for the prevention of any kind of catastrophic failure. Allocations are given a type describing its contents, and this type is fixed for the duration of the allocation. This allows type-based alias analysis to infer that allocations of different types are distinct. Most type-safe languages use garbage collection. Pierce says, "it is extremely difficult to achieve type safety in the presence of an explicit deallocation operation", due to the dangling pointer problem. However Rust is generally considered type-safe and uses a borrow checker to achieve memory safety, instead of garbage collection. Type safety in object oriented languages In object-oriented languages type safety is usually intrinsic in the fact that a type system is in place. This is expressed in terms of class definitions. A class essentially defines the structure of the objects derived from it and an API as a contract for handling these objects. Each time a new object is created it will comply with that contract. Each function that exchanges objects derived from a specific class, or implementing a specific interface, will adhere to that contract: hence in that function the operations permitted on that object will be only those defined by the methods of the class the object implements. This will guarantee that the object integrity will be preserved. Exceptions to this are object oriented languages that allow dynamic modification of the object structure, or the use of reflection to modify the content of an object to overcome the constraints imposed by the class methods definitions. Type safety issues in specific languages Ada was designed to be suitable for embedded systems, device drivers and other forms of system programming, but also to encourage type-safe programming. To resolve these conflicting goals, Ada confines type-unsafety to a certain set of special constructs whose names usually begin with the string Unchecked_. Unchecked_Deallocation can be effectively banned from a unit of Ada text by applying pragma Pure to this unit. It is expected that programmers will use Unchecked_ constructs very carefully and only when necessary; programs that do not use them are type-safe. The SPARK programming language is a subset of Ada eliminating all its potential ambiguities and insecurities while at the same time adding statically checked contracts to the language features available. SPARK avoids the issues with dangling pointers by disallowing allocation at run time entirely. Ada2012 adds statically checked contracts to the language itself (in form of pre-, and post-conditions, as well as type invariants). The C programming language is type-safe in limited contexts; for example, a compile-time error is generated when an attempt is made to convert a pointer to one type of structure to a pointer to another type of structure, unless an explicit cast is used. However, a number of very common operations are non-type-safe; for example, the usual way to print an integer is something like printf("%d", 12), where the %d tells printf at run-time to expect an integer argument. (Something like printf("%s", 12), which tells the function to expect a pointer to a character-string and yet supplies an integer argument, may be accepted by compilers, but will produce undefined results.) This is partially mitigated by some compilers (such as gcc) checking type correspondences between printf arguments and format strings. In addition, C, like Ada, provides unspecified or undefined explicit conversions; and unlike in Ada, idioms that use these conversions are very common, and have helped to give C a type-unsafe reputation. For example, the standard way to allocate memory on the heap is to invoke a memory allocation function, such as malloc, with an argument indicating how many bytes are required. The function returns a void pointer (void*), which the calling code must explicitly or implicitly cast to the appropriate pointer type. Pre-standardized implementations of C required an explicit cast to do so, therefore for an allocation of some struct Foo, the code Foo* foo = (struct Foo*)malloc(sizeof(struct Foo)) became the accepted practice. malloc() returns void* which does not need to be explicitly cast in C, but in C++ this casting is made mandatory for type safety. Some features of C++ that promote more type-safe code: C# is type-safe. It has support for untyped pointers, but this must be accessed using the "unsafe" keyword which can be prohibited at the compiler level. It has inherent support for run-time cast validation. Casts can be validated by using the "as" keyword that will return a null reference if the cast is invalid, or by using a C-style cast that will throw an exception if the cast is invalid. See C Sharp conversion operators. Undue reliance on the object type (from which all other types are derived) runs the risk of defeating the purpose of the C# type system. It is usually better practice to abandon object references in favour of generics, similar to templates in C++ and generics in Java. The Java language is designed to enforce type safety. Anything in Java happens inside an object and each object is an instance of a class. To implement the type safety enforcement, each object, before usage, needs to be allocated. Java allows usage of primitive types but only inside properly allocated objects. Sometimes a part of the type safety is implemented indirectly: e.g. the class BigDecimal represents a floating point number of arbitrary precision, but handles only numbers that can be expressed with a finite representation. The operation BigDecimal.divide() calculates a new object as the division of two numbers expressed as BigDecimal. In this case if the division has no finite representation, as when one computes e.g. 1/3=0.33333..., the divide() method can raise an exception if no rounding mode is defined for the operation. Hence the library, rather than the language, guarantees that the object respects the contract implicit in the class definition. Standard ML has rigorously defined semantics and is known to be type-safe. However, some implementations, including Standard ML of New Jersey (SML/NJ), its syntactic variant Mythryl and MLton, provide libraries that offer unsafe operations. These facilities are often used in conjunction with those implementations' foreign function interfaces to interact with non-ML code (such as C libraries) that may require data laid out in specific ways. Another example is the SML/NJ interactive toplevel itself, which must use unsafe operations to execute ML code entered by the user. Modula-2 is a strongly-typed language with a design philosophy to require any unsafe facilities to be explicitly marked as unsafe. This is achieved by "moving" such facilities into a built-in pseudo-library called SYSTEM from where they must be imported before they can be used. The import thus makes it visible when such facilities are used. Unfortunately, this was not consequently implemented in the original language report and its implementation. There still remained unsafe facilities such as the type cast syntax and variant records (inherited from Pascal) that could be used without prior import. The difficulty in moving these facilities into the SYSTEM pseudo-module was the lack of any identifier for the facility that could then be imported since only identifiers can be imported, but not syntax. The ISO Modula-2 standard corrected this for the type cast facility by changing the type cast syntax into a function called CAST which has to be imported from pseudo-module SYSTEM. However, other unsafe facilities such as variant records remained available without any import from pseudo-module SYSTEM. A recent revision of the language applied the original design philosophy rigorously. First, pseudo-module SYSTEM was renamed to UNSAFE to make the unsafe nature of facilities imported from there more explicit. Then all remaining unsafe facilities where either removed altogether (for example variant records) or moved to pseudo-module UNSAFE. For facilities where there is no identifier that could be imported, enabling identifiers were introduced. In order to enable such a facility, its corresponding enabling identifier must be imported from pseudo-module UNSAFE. No unsafe facilities remain in the language that do not require import from UNSAFE. Pascal has had a number of type safety requirements, some of which are kept in some compilers. Where a Pascal compiler dictates "strict typing", two variables cannot be assigned to each other unless they are either compatible (such as conversion of integer to real) or assigned to the identical subtype. For example, if you have the following code fragment: Under strict typing, a variable defined as TwoTypes is not compatible with DualTypes (because they are not identical, even though the components of that user defined type are identical) and an assignment of T1 := D2; is illegal. An assignment of T1 := T2; would be legal because the subtypes they are defined to are identical. However, an assignment such as T1.Q := D1.Q; would be legal. In general, Common Lisp is a type-safe language. A Common Lisp compiler is responsible for inserting dynamic checks for operations whose type safety cannot be proven statically. However, a programmer may indicate that a program should be compiled with a lower level of dynamic type-checking. A program compiled in such a mode cannot be considered type-safe. C++ examples The following examples illustrates how C++ cast operators can break type safety when used incorrectly. The first example shows how basic data types can be incorrectly cast: In this example, reinterpret_cast explicitly prevents the compiler from performing a safe conversion from integer to floating-point value. When the program runs it will output a garbage floating-point value. The problem could have been avoided by instead writing float fval = ival; The next example shows how object references can be incorrectly downcast: The two child classes have members of different types. When downcasting a parent class pointer to a child class pointer, then the resulting pointer may not point to a valid object of correct type. In the example, this leads to garbage value being printed. The problem could have been avoided by replacing static_cast with dynamic_cast that throws an exception on invalid casts. See also Notes References |
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Contents List of brightest stars This is a list of stars arranged by their apparent magnitude – their brightness as observed from Earth. It includes all stars brighter than magnitude +2.50 in visible light, measured using a V-band filter in the UBV photometric system. Stars in binary systems (or other multiples) are listed by their total or combined brightness if they appear as a single star to the naked eye, or listed separately if they do not. As with all magnitude systems in astronomy, the scale is logarithmic and inverted i.e. lower/more negative numbers are brighter. Most stars on this list appear bright from Earth because they are nearby, not because they are intrinsically luminous. For a list which compensates for the distances, converting the apparent magnitude to the absolute magnitude, see the list of most luminous stars. Measurement The Sun is the brightest star as viewed from Earth, at −26.78 mag. The second brightest is Sirius at −1.46 mag. For comparison, the brightest non-stellar objects in the Solar System have maximum brightnesses of: Any exact order of the visual brightness of stars is not perfectly defined for four reasons: Nomenclature All of these stars have multiple valid names or catalogue designations. The table lists their Bayer designation and the most common proper name. Most of the proper names have been approved by the Working Group on Star Names of the International Astronomical Union (IAU). Popular names which have not been approved by the IAU are omitted. Table The source of magnitudes cited in this list is the linked Wikipedia articles. This basic list is a catalog of what Wikipedia itself documents. References can be found in the individual articles. Brightest star by galaxy See also References External links |
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List of programming languages This is an index to notable programming languages, in current or historical use. Dialects of BASIC (which have their own page), esoteric programming languages, and markup languages are not included. A programming language does not need to be imperative or Turing-complete, but must be executable and so does not include markup languages such as HTML or XML, but does include domain-specific languages such as SQL and its dialects. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also |
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Contents Minecraft Minecraft is a sandbox game developed and published by Mojang Studios. Following its initial public alpha release in 2009, it was formally released in 2011 for personal computers. The game has since been ported to numerous platforms, including mobile devices and various video game consoles. In Minecraft, players explore a procedurally generated world with virtually infinite terrain made up of voxels (cubes). They can discover and extract raw materials, craft tools and items, build structures, fight hostile mobs, and cooperate with or compete against other players in multiplayer. The game's large community offers a wide variety of user-generated content, such as modifications, servers, player skins, texture packs, and custom maps, which add new game mechanics and possibilities. Originally created by Markus "Notch" Persson using the Java programming language, Jens "Jeb" Bergensten was handed control over the game's development following its full release. In 2014, Mojang and the Minecraft intellectual property were purchased by Microsoft for US$2.5 billion; Xbox Game Studios hold the publishing rights for the Bedrock Edition, the unified cross-platform version which evolved from the Pocket Edition codebase[i] and replaced the legacy console versions. Bedrock is updated concurrently with Mojang's original Java Edition, although with numerous, generally small, differences. Minecraft is the best-selling video game in history with over 350 million copies sold. It has received critical acclaim, winning several awards and being cited as one of the greatest video games of all time. Social media, parodies, adaptations, merchandise, and the annual Minecon conventions have played prominent roles in popularizing it. The wider Minecraft franchise includes several spin-off games, such as Minecraft: Story Mode, Minecraft Dungeons, and Minecraft Legends. A film adaptation, titled A Minecraft Movie, was released in 2025 and became the second highest-grossing video game film of all time. Gameplay Minecraft is a 3D sandbox video game that has no required goals to accomplish, giving players a large amount of freedom in choosing how to play the game. The game features an optional achievement system. Gameplay is in the first-person perspective by default, but players have the option of third-person perspectives. The game world is composed of rough 3D objects—mainly cubes, referred to as blocks—representing various materials, such as dirt, stone, ores, tree trunks, water, and lava. The core gameplay revolves around picking up and placing these objects. These blocks are arranged in a voxel grid, while players can move freely around the world. Players can break, or mine, blocks and then place them elsewhere, enabling them to build things. Very few blocks are affected by gravity, instead maintaining their voxel position in the air. Players can also craft a wide variety of items, such as armor, which mitigates damage from attacks; weapons (such as swords or bows and arrows), which allow monsters and animals to be killed more easily; and tools (such as pickaxes or shovels), which break certain types of blocks more quickly. Some items have multiple tiers depending on the material used to craft them, with higher-tier items being more effective and durable. They may also freely craft helpful blocks—such as furnaces which can cook food and smelt ores, and torches that produce light—or exchange items with villagers (NPC) through trading emeralds for different goods and vice versa. The game has an inventory system, allowing players to carry a limited number of items. The in-game time system follows a day and night cycle, with one full cycle lasting for 20 real-time minutes. The game also contains a material called redstone, which can be used to make primitive mechanical devices, electrical circuits, and logic gates, allowing for the construction of many complex systems. New players are given a randomly selected default character skin out of nine possibilities, including Steve or Alex, but are able to create and upload their own skins. Players encounter various mobs (short for mobile entities) including animals, villagers, and hostile creatures. Passive mobs, such as cows, pigs, and chickens, spawn during the daytime and can be hunted for food and crafting materials, while hostile mobs—including large spiders, witches, skeletons, and zombies—spawn during nighttime or in dark places such as caves. Some hostile mobs, such as zombies and skeletons, burn under the sun if they have no headgear and are not standing in water. Other creatures unique to Minecraft include the creeper (an exploding creature that sneaks up on the player) and the enderman (a creature with the ability to teleport as well as pick up and place blocks). There are also variants of mobs that spawn in different conditions; for example, zombies have husk and drowned variants that spawn in deserts and oceans, respectively. The Minecraft environment is procedurally generated as players explore it using a map seed that is randomly chosen at the time of world creation (or manually specified by the player). Divided into biomes representing different environments with unique resources and structures, worlds are designed to be effectively infinite in traditional gameplay, though technical limits on the player have existed throughout development, both intentionally and not. Implementation of horizontally infinite generation initially resulted in a glitch termed the "Far Lands" at over 12 million blocks away from the world center, where terrain generated as wall-like, fissured patterns. The Far Lands and associated glitches were considered the effective edge of the world until they were resolved, with the current horizontal limit instead being a special impassable barrier called the world border, located 30 million blocks away. Vertical space is comparatively limited, with an unbreakable bedrock layer at the bottom and a building limit several hundred blocks into the sky. Minecraft features three independent dimensions accessible through portals and providing alternate game environments. The Overworld is the starting dimension and represents the real world, with a terrestrial surface setting including plains, mountains, forests, oceans, caves, and small sources of lava. The Nether is a hell-like underworld dimension accessed via an obsidian portal and composed mainly of lava. Mobs that populate the Nether include shrieking, fireball-shooting ghasts, alongside anthropomorphic pigs called piglins and their zombified counterparts. Piglins in particular have a bartering system, where players can give them gold ingots and receive items in return. Structures known as Nether Fortresses generate in the Nether, containing mobs such as wither skeletons and blazes, which can drop blaze rods needed to access the End dimension. The player can also choose to build an optional boss mob known as the Wither, using skulls obtained from wither skeletons and soul sand. The End can be reached through an end portal, consisting of twelve end portal frames. End portals are found in underground structures in the Overworld known as strongholds. To find strongholds, players must craft eyes of ender using an ender pearl and blaze powder. Eyes of ender can then be thrown, traveling in the direction of the stronghold. Once the player reaches the stronghold, they can place eyes of ender into each portal frame to activate the end portal. The dimension consists of islands floating in a dark, bottomless void. A boss enemy called the Ender Dragon guards the largest, central island. Killing the dragon opens access to an exit portal, which, when entered, cues the game's ending credits and the End Poem, a roughly 1,500-word work written by Irish novelist Julian Gough, which takes about nine minutes to scroll past, is the game's only narrative text, and the only text of significant length directed at the player.: 10–12 At the conclusion of the credits, the player is teleported back to their respawn point and may continue the game indefinitely. In Survival mode, players have to gather natural resources such as wood and stone found in the environment in order to craft certain blocks and items. Depending on the difficulty, monsters spawn in darker areas outside a certain radius of the character, requiring players to build a shelter in order to survive at night. The mode also has a health bar which is depleted by attacks from mobs, falls, drowning, falling into lava, suffocation, starvation, and other events. Players also have a hunger bar, which must be periodically refilled by eating food in-game unless the player is playing on peaceful difficulty. If the hunger bar is empty, the player starves. Health replenishes when players have a full hunger bar or continuously on peaceful. Upon losing all health, players die. The items in the players' inventories are dropped unless the game is reconfigured not to do so. Players then re-spawn at their spawn point, which by default is where players first spawn in the game and can be changed by sleeping in a bed or using a respawn anchor. Dropped items can be recovered if players can reach them before they despawn after 5 minutes. Players may acquire experience points (commonly referred to as "xp" or "exp") by killing mobs and other players, mining, smelting ores, animal breeding, and cooking food. Experience can then be spent on enchanting tools, armor and weapons. Enchanted items are generally more powerful, last longer, or have other special effects. The game features two more game modes based on Survival, known as Hardcore mode and Adventure mode. Hardcore mode plays identically to Survival mode, but with the game's difficulty setting locked to "Hard" and with permadeath, forcing them to delete the world or explore it as a spectator after dying. Adventure mode was added to the game in a post-launch update, and prevents the player from directly modifying the game's world. It was designed primarily for use in custom maps, allowing map designers to let players experience it as intended. In Creative mode, players have access to an infinite number of all resources and items in the game through the inventory menu and can place or mine them instantly. Players can toggle the ability to fly freely around the game world at will, and their characters usually do not take any damage nor are affected by hunger. The game mode helps players focus on building and creating projects of any size without disturbance. Multiplayer in Minecraft enables multiple players to interact and communicate with each other on a single world. It is available through direct game-to-game multiplayer, local area network (LAN) play, local split screen (console-only), and servers (player-hosted and business-hosted). Players can run their own server by making a realm, using a host provider, hosting one themselves or connect directly to another player's game via Xbox Live, PlayStation Network or Nintendo Switch Online. Single-player worlds have LAN support, allowing players to join a world on locally interconnected computers without a server setup. Minecraft multiplayer servers are guided by server operators, who have access to server commands such as setting the time of day and teleporting players. Operators can also set up restrictions concerning which usernames or IP addresses are allowed or disallowed to enter the server. Multiplayer servers have a wide range of activities, with some servers having their own unique rules and customs. The largest and most popular server is Hypixel, which has been visited by over 14 million unique players. Player versus player combat (PvP) can be enabled to allow fighting between players. In 2013, Mojang announced Minecraft Realms, a server hosting service intended to enable players to run server multiplayer games easily and safely without having to set up their own. Unlike a standard server, only invited players can join Realms servers, and these servers do not use server addresses. Minecraft: Java Edition Realms server owners can invite up to twenty people to play on their server, with up to ten players online at a time. Minecraft Realms server owners can invite up to 3,000 people to play on their server, with up to ten players online at one time. The Minecraft: Java Edition Realms servers do not support user-made plugins, but players can play custom Minecraft maps. Minecraft Bedrock Realms servers support user-made add-ons, resource packs, behavior packs, and custom Minecraft maps. At Electronic Entertainment Expo 2016, support for cross-platform play between Windows 10, iOS, and Android platforms was added through Realms starting in June 2016, with Xbox One and Nintendo Switch support to come later in 2017, and support for virtual reality devices. On 31 July 2017, Mojang released the beta version of the update allowing cross-platform play. Nintendo Switch support for Realms was released in July 2018. The modding community consists of fans, users and third-party programmers. Using a variety of application program interfaces that have arisen over time, they have produced a wide variety of downloadable content for Minecraft, such as modifications, texture packs and custom maps. Modifications of the Minecraft code, called mods, add a variety of gameplay changes, ranging from new blocks, items, and mobs to entire arrays of mechanisms. The modding community is responsible for a substantial supply of mods from ones that enhance gameplay, such as mini-maps, waypoints, and durability counters, to ones that add to the game elements from other video games and media. While a variety of mod frameworks were independently developed by reverse engineering the code, Mojang has also enhanced vanilla Minecraft with official frameworks for modification, allowing the production of community-created resource packs, which alter certain game elements including textures and sounds. Players can also create their own "maps" (custom world save files) that often contain specific rules, challenges, puzzles and quests, and share them for others to play. Mojang added an adventure mode in August 2012 and "command blocks" in October 2012, which were created specially for custom maps in Java Edition. Data packs, introduced in version 1.13 of the Java Edition, allow further customization, including the ability to add new achievements, dimensions, functions, loot tables, predicates, recipes, structures, tags, and world generation. The Xbox 360 Edition supported downloadable content, which was available to purchase via the Xbox Games Store; these content packs usually contained additional character skins. It later received support for texture packs in its twelfth title update while introducing "mash-up packs", which combined texture packs with skin packs and changes to the game's sounds, music and user interface. The first mash-up pack (and by extension, the first texture pack) for the Xbox 360 Edition was released on 4 September 2013, and was themed after the Mass Effect franchise. Unlike Java Edition, however, the Xbox 360 Edition did not support player-made mods or custom maps. A cross-promotional resource pack based on the Super Mario franchise by Nintendo was released exclusively for the Wii U Edition worldwide on 17 May 2016, and later bundled free with the Nintendo Switch Edition at launch. Another based on Fallout was released on consoles that December, and for Windows and Mobile in April 2017. In April 2018, malware was discovered in several downloadable user-made Minecraft skins for use with the Java Edition of the game. Avast stated that nearly 50,000 accounts were infected, and when activated, the malware would attempt to reformat the user's hard drive. Mojang promptly patched the issue, and released a statement stating that "the code would not be run or read by the game itself", and would run only when the image containing the skin itself was opened. In June 2017, Mojang released the "1.1 Discovery Update" to the Pocket Edition of the game, which later became the Bedrock Edition. The update introduced the "Marketplace", a catalogue of purchasable user-generated content intended to give Minecraft creators "another way to make a living from the game". Various skins, maps, texture packs and add-ons from different creators can be bought with "Minecoins", a digital currency that is purchased with real money. Additionally, users can access specific content with a subscription service titled "Marketplace Pass". Alongside content from independent creators, the Marketplace also houses items published by Mojang and Microsoft themselves, as well as official collaborations between Minecraft and other intellectual properties. By 2022, the Marketplace had over 1.7 billion content downloads, generating over $500 million in revenue. Development Before creating Minecraft, Markus "Notch" Persson was a game developer at King, where he worked until March 2009. At King, he primarily developed browser games and learned several programming languages. During his free time, he prototyped his own games, often drawing inspiration from other titles, and was an active participant on the TIGSource forums for independent developers. One such project was "RubyDung", a base-building game inspired by Dwarf Fortress, but with an isometric, three-dimensional perspective similar to RollerCoaster Tycoon. Among the features in RubyDung that he explored was a first-person view similar to Dungeon Keeper, though he ultimately discarded this idea, feeling the graphics were too pixelated at the time. Around March 2009, Persson left King and joined jAlbum, while continuing to work on his prototypes. Infiniminer, a block-based open-ended mining game first released in April 2009, inspired Persson's vision for RubyDung's future direction. Infiniminer heavily influenced the visual style of gameplay, including bringing back the first-person mode, the "blocky" visual style and the block-building fundamentals. However, unlike Infiniminer, Persson wanted Minecraft to have RPG elements. The first public alpha build of Minecraft was released on 17 May 2009 on TIGSource. Over the years, Persson regularly released test builds that added new features, including tools, mobs, and entire new dimensions. In 2011, partly due to the game's rising popularity, Persson decided to release a full 1.0 version—a second part of the "Adventure Update"—on 18 November 2011. Shortly after, Persson stepped down from development, handing the project's lead to Jens "Jeb" Bergensten. On 15 September 2014, Microsoft, the developer behind the Microsoft Windows operating system and Xbox video game console, announced a $2.5 billion acquisition of Mojang, which included the Minecraft intellectual property. Persson had suggested the deal on Twitter, asking a corporation to buy his stake in the game after receiving criticism for enforcing terms in the game's end-user license agreement (EULA), which had been in place for the past three years. According to Persson, Mojang CEO Carl Manneh received a call from a Microsoft executive shortly after the tweet, asking if Persson was serious about a deal. Mojang was also approached by other companies including Activision Blizzard and Electronic Arts. The deal with Microsoft was arbitrated on 6 November 2014 and led to Persson becoming one of Forbes' "World's Billionaires". After 2014, Minecraft's primary versions received usually annual major updates—free to players who have purchased the game— each primarily centered around a specific theme. For instance, version 1.13, the Update Aquatic, focused on ocean-related features, while version 1.16, the Nether Update, introduced significant changes to the Nether dimension. However, in late 2024, Mojang announced a shift in their update strategy; rather than releasing large updates annually, they opted for a more frequent release schedule with smaller, incremental updates, stating, "We know that you want new Minecraft content more often." The Bedrock Edition has also received regular updates, now matching the themes of the Java Edition updates. Other versions of the game, such as various console editions and the Pocket Edition, were either merged into Bedrock or discontinued and have not received further updates. On 7 May 2019, coinciding with Minecraft's 10th anniversary, a JavaScript recreation of an old 2009 Java Edition build named Minecraft Classic was made available to play online for free. On 16 April 2020, a Bedrock Edition-exclusive beta version of Minecraft, called Minecraft RTX, was released by Nvidia. It introduced physically-based rendering, real-time path tracing, and DLSS for RTX-enabled GPUs. The public release was made available on 8 December 2020. Path tracing can only be enabled in supported worlds, which can be downloaded for free via the in-game Minecraft Marketplace, with a texture pack from Nvidia's website, or with compatible third-party texture packs. It cannot be enabled by default with any texture pack on any world. Initially, Minecraft RTX was affected by many bugs, display errors, and instability issues. On 22 March 2025, a new visual mode called Vibrant Visuals, an optional graphical overhaul similar to Minecraft RTX, was announced. It promises modern rendering features—such as dynamic shadows, screen space reflections, volumetric fog, and bloom—without the need of RTX-capable hardware. Vibrant Visuals was released as a part of the Chase the Skies update on 17 June 2025 for Bedrock Edition and is planned to release on Java Edition at a later date. Development began for the original edition of Minecraft—then known as Cave Game, and now known as the Java Edition—in May 2009,[k] and ended on 13 May, when Persson released a test video on YouTube of an early version of the game, dubbed the "Cave game tech test" or the "Cave game tech demo". The game was named Minecraft: Order of the Stone the next day, after a suggestion made by a player. "Order of the Stone" came from the webcomic The Order of the Stick, and "Minecraft" was chosen "because it's a good name". The title was later shortened to just Minecraft, omitting the subtitle. Persson completed the game's base programming over a weekend in May 2009, and private testing began on TigIRC on 16 May. The first public release followed on 17 May 2009 as a developmental version shared on the TIGSource forums. Based on feedback from forum users, Persson continued updating the game. This initial public build later became known as Classic. Further developmental phases—dubbed Survival Test, Indev, and Infdev—were released throughout 2009 and 2010. The first major update, known as Alpha, was released on 30 June 2010. At the time, Persson was still working a day job at jAlbum but later resigned to focus on Minecraft full-time as sales of the alpha version surged. Updates were distributed automatically, introducing new blocks, items, mobs, and changes to game mechanics such as water flow. With revenue generated from the game, Persson founded Mojang, a video game studio, alongside former colleagues Jakob Porser and Carl Manneh. On 11 December 2010, Persson announced that Minecraft would enter its beta phase on 20 December. He assured players that bug fixes and all pre-release updates would remain free. As development progressed, Mojang expanded, hiring additional employees to work on the project. The game officially exited beta and launched in full on 18 November 2011. On 1 December 2011, Jens "Jeb" Bergensten took full creative control over Minecraft, replacing Persson as lead designer. On 28 February 2012, Mojang announced the hiring of the developers behind Bukkit, a popular developer API for Minecraft servers, to improve Minecraft's support of server modifications. This move included Mojang taking apparent ownership of the CraftBukkit server mod, though this apparent acquisition later became controversial, and its legitimacy was questioned due to CraftBukkit's open-source nature and licensing under the GNU General Public License and Lesser General Public License. In August 2011, Minecraft: Pocket Edition was released as an early alpha for the Xperia Play via the Android Market, later expanding to other Android devices on 8 October 2011. The iOS version followed on 17 November 2011. A port was made available for Windows Phones shortly after Microsoft acquired Mojang. Unlike Java Edition, Pocket Edition initially focused on Minecraft's creative building and basic survival elements but lacked many features of the PC version. Bergensten confirmed on Twitter that the Pocket Edition was written in C++ rather than Java, as iOS does not support Java. On 10 December 2014, a port of Pocket Edition was released for Windows Phone 8.1. In July 2015, a port of the Pocket Edition to Windows 10 was released as the Windows 10 Edition, with full crossplay to other Pocket versions. In January 2017, Microsoft announced that it would no longer maintain the Windows Phone versions of Pocket Edition. On 20 September 2017, with the "Better Together Update", the Pocket Edition was ported to the Xbox One, and was renamed to the Bedrock Edition. The console versions of Minecraft debuted with the Xbox 360 edition, developed by 4J Studios and released on 9 May 2012. Announced as part of the Xbox Live Arcade NEXT promotion, this version introduced a redesigned crafting system, a new control interface, in-game tutorials, split-screen multiplayer, and online play via Xbox Live. Unlike the PC version, its worlds were finite, bordered by invisible walls. Initially, the Xbox 360 version resembled outdated PC versions but received updates to bring it closer to Java Edition before eventually being discontinued. The Xbox One version launched on 5 September 2014, featuring larger worlds and support for more players. Minecraft expanded to PlayStation platforms with PlayStation 3 and PlayStation 4 editions released on 17 December 2013 and 4 September 2014, respectively. Originally planned as a PS4 launch title, it was delayed before its eventual release. A PlayStation Vita version followed in October 2014. Like the Xbox versions, the PlayStation editions were developed by 4J Studios. Nintendo platforms received Minecraft: Wii U Edition on 17 December 2015, with a physical release in North America on 17 June 2016 and in Europe on 30 June. The Nintendo Switch version launched via the eShop on 11 May 2017. During a Nintendo Direct presentation on 13 September 2017, Nintendo announced that Minecraft: New Nintendo 3DS Edition, based on the Pocket Edition, would be available for download immediately after the livestream, and a physical copy available on a later date. The game is compatible only with the New Nintendo 3DS or New Nintendo 2DS XL systems and does not work with the original 3DS or 2DS systems. On 20 September 2017, the Better Together Update introduced Bedrock Edition across Xbox One, Windows 10, VR, and mobile platforms, enabling cross-play between these versions. Bedrock Edition later expanded to Nintendo Switch and PlayStation 4, with the latter receiving the update in December 2019, allowing cross-platform play for users with a free Xbox Live account. The Bedrock Edition released a native version for PlayStation 5 on 22 October 2024, while the Xbox Series X/S version launched on 17 June 2025. On 18 December 2018, the PlayStation 3, PlayStation Vita, Xbox 360, and Wii U versions of Minecraft received their final update and would later become known as "Legacy Console Editions". On 15 January 2019, the New Nintendo 3DS version of Minecraft received its final update, effectively becoming discontinued as well. An educational version of Minecraft, designed for use in schools, launched on 1 November 2016. It is available on Android, ChromeOS, iPadOS, iOS, MacOS, and Windows. On 20 August 2018, Mojang announced that it would bring Education Edition to iPadOS in Autumn 2018. It was released to the App Store on 6 September 2018. On 27 March 2019, it was announced that it would be operated by JD.com in China. On 26 June 2020, a public beta for the Education Edition was made available to Google Play Store compatible Chromebooks. The full game was released to the Google Play Store for Chromebooks on 7 August 2020. On 20 May 2016, China Edition (also known as My World) was announced as a localized edition for China, where it was released under a licensing agreement between NetEase and Mojang. The PC edition was released for public testing on 8 August 2017. The iOS version was released on 15 September 2017, and the Android version was released on 12 October 2017. The PC edition is based on the original Java Edition, while the iOS and Android mobile versions are based on the Bedrock Edition. The edition is free-to-play and had over 700 million registered accounts by September 2023. This version of Bedrock Edition is exclusive to Microsoft's Windows 10 and Windows 11 operating systems. The beta release for Windows 10 launched on the Windows Store on 29 July 2015. After nearly a year and a half in beta, Microsoft fully released the version on 19 December 2016. Called the "Ender Update", this release implemented new features to this version of Minecraft like world templates and add-on packs. On 7 June 2022, the Java and Bedrock Editions of Minecraft were merged into a single bundle for purchase on Windows; those who owned one version would automatically gain access to the other version. Both game versions would otherwise remain separate. Around 2011, prior to Minecraft's full release, Mojang collaborated with The Lego Group to create a Lego brick-based Minecraft game called Brickcraft. This would have modified the base Minecraft game to use Lego bricks, which meant adapting the basic 1×1 block to account for larger pieces typically used in Lego sets. Persson worked on an early version called "Project Rex Kwon Do", named after the character of the same name from the film Napoleon Dynamite. Although Lego approved the project and Mojang assigned two developers for six months, it was canceled due to the Lego Group's demands, according to Mojang's Daniel Kaplan. Lego considered buying Mojang to complete the game, but when Microsoft offered over $2 billion for the company, Lego stepped back, unsure of Minecraft's potential. On 26 June 2025, a build of Brickcraft dated 28 June 2012 was published on a community archive website Omniarchive. Initially, Markus Persson planned to support the Oculus Rift with a Minecraft port. However, after Facebook acquired Oculus in 2013, he abruptly canceled the plans, stating, "Facebook creeps me out." In 2016, a community-made mod, Minecraft VR, added VR support for Java Edition, followed by Vivecraft for HTC Vive. Later that year, Microsoft introduced official Oculus Rift support for Windows 10 Edition, leading to the discontinuation of the Minecraft VR mod due to trademark complaints. Vivecraft was endorsed by Minecraft VR contributors for its Rift support. Also available is a Gear VR version, titled Minecraft: Gear VR Edition. Windows Mixed Reality support was added in 2017. On 7 September 2020, Mojang Studios announced that the PlayStation 4 Bedrock version would receive PlayStation VR support later that month. In September 2024, the Minecraft team announced they would no longer support PlayStation VR, which received its final update in March 2025. Music and sound design Minecraft's music and sound effects were produced by German musician Daniel Rosenfeld, better known as C418. To create the sound effects for the game, Rosenfeld made extensive use of Foley techniques. On learning the processes for the game, he remarked, "Foley's an interesting thing, and I had to learn its subtleties. Early on, I wasn't that knowledgeable about it. It's a whole trial-and-error process. You just make a sound and eventually you go, 'Oh my God, that's it! Get the microphone!' There's no set way of doing anything at all." He reminisced on creating the in-game sound for grass blocks, stating "It turns out that to make grass sounds you don't actually walk on grass and record it, because grass sounds like nothing. What you want to do is get a VHS, break it apart, and just lightly touch the tape." According to Rosenfeld, his favorite sound to design for the game was the hisses of spiders. He elaborates, "I like the spiders. Recording that was a whole day of me researching what a spider sounds like. Turns out, there are spiders that make little screeching sounds, so I think I got this recording of a fire hose, put it in a sampler, and just pitched it around until it sounded like a weird spider was talking to you." Many of the sound design decisions by Rosenfeld were done accidentally or spontaneously. The creeper notably lacks any specific noises apart from a loud fuse-like sound when about to explode; Rosenfeld later recalled "That was just a complete accident by Markus and me [sic]. We just put in a placeholder sound of burning a matchstick. It seemed to work hilariously well, so we kept it." On other sounds, such as those of the zombie, Rosenfeld remarked, "I actually never wanted the zombies so scary. I intentionally made them sound comical. It's nice to hear that they work so well [...]." Rosenfeld remarked that the sound engine was "terrible" to work with, remembering "If you had two song files at once, it [the game engine] would actually crash. There were so many more weird glitches like that the guys never really fixed because they were too busy with the actual game and not the sound engine." The background music in Minecraft consists of instrumental ambient music. To compose the music of Minecraft, Rosenfeld used the package from Ableton Live, along with several additional plug-ins. Speaking on them, Rosenfeld said "They can be pretty much everything from an effect to an entire orchestra. Additionally, I've got some synthesizers that are attached to the computer. Like a Moog Voyager, Dave Smith Prophet 08 and a Virus TI." On 4 March 2011, Rosenfeld released a soundtrack titled Minecraft – Volume Alpha; it includes most of the tracks featured in Minecraft, as well as other music not featured in the game. Kirk Hamilton of Kotaku chose the music in Minecraft as one of the best video game soundtracks of 2011. On 9 November 2013, Rosenfeld released the second official soundtrack, titled Minecraft – Volume Beta, which included the music that was added in a 2013 "Music Update" for the game. A physical release of Volume Alpha, consisting of CDs, black vinyl, and limited-edition transparent green vinyl LPs, was issued by indie electronic label Ghostly International on 21 August 2015. On 14 August 2020, Ghostly released Volume Beta on CD and vinyl, with alternate color LPs and lenticular cover pressings released in limited quantities. The final update Rosenfeld worked on was 2018's 1.13 Update Aquatic. His music remained the only music in the game until 2020's "Nether Update", introducing pieces from Lena Raine. Since then, other composers have made contributions, including Kumi Tanioka, Samuel Åberg, Aaron Cherof, and Amos Roddy, with Raine remaining as the new primary composer. Ownership of all music besides Rosenfeld's independently released albums has been retained by Microsoft, with their label publishing all of the other artists' releases. Gareth Coker also composed some of the music for the game's mini games from the Legacy Console editions. Rosenfeld had stated his intent to create a third album of music for the game in a 2015 interview with Fact, and confirmed its existence in a 2017 tweet, stating that his work on the record as of then had tallied up to be longer than the previous two albums combined, which in total clocks in at over 3 hours and 18 minutes. However, due to licensing issues with Microsoft, the third volume has since not seen release. On 8 January 2021, Rosenfeld was asked in an interview with Anthony Fantano whether or not there was still a third volume of his music intended for release. Rosenfeld responded, saying, "I have something—I consider it finished—but things have become complicated, especially as Minecraft is now a big property, so I don't know." Reception Minecraft has received critical acclaim, with praise for the creative freedom it grants players in-game, as well as the ease of enabling emergent gameplay. Critics have expressed enjoyment in Minecraft's complex crafting system, commenting that it is an important aspect of the game's open-ended gameplay. Most publications were impressed by the game's "blocky" graphics, with IGN describing them as "instantly memorable". Reviewers also liked the game's adventure elements, noting that the game creates a good balance between exploring and building. The game's multiplayer feature has been generally received favorably, with IGN commenting that "adventuring is always better with friends". Jaz McDougall of PC Gamer said Minecraft is "intuitively interesting and contagiously fun, with an unparalleled scope for creativity and memorable experiences". It has been regarded as having introduced millions of children to the digital world, insofar as its basic game mechanics are logically analogous to computer commands. IGN was disappointed about the troublesome steps needed to set up multiplayer servers, calling it a "hassle". Critics also said that visual glitches occur periodically. Despite its release out of beta in 2011, GameSpot said the game had an "unfinished feel", adding that some game elements seem "incomplete or thrown together in haste". A review of the alpha version, by Scott Munro of the Daily Record, called it "already something special" and urged readers to buy it. Jim Rossignol of Rock Paper Shotgun also recommended the alpha of the game, calling it "a kind of generative 8-bit Lego Stalker". On 17 September 2010, gaming webcomic Penny Arcade began a series of comics and news posts about the addictiveness of the game. The Xbox 360 version was generally received positively by critics, but did not receive as much praise as the PC version. Although reviewers were disappointed by the lack of features such as mod support and content from the PC version, they acclaimed the port's addition of a tutorial and in-game tips and crafting recipes, saying that they make the game more user-friendly. The Xbox One Edition was one of the best received ports, being praised for its relatively large worlds. The PlayStation 3 Edition also received generally favorable reviews, being compared to the Xbox 360 Edition and praised for its well-adapted controls. The PlayStation 4 edition was the best received port to date, being praised for having 36 times larger worlds than the PlayStation 3 edition and described as nearly identical to the Xbox One edition. The PlayStation Vita Edition received generally positive reviews from critics but was noted for its technical limitations. The Wii U version received generally positive reviews from critics but was noted for a lack of GamePad integration. The 3DS version received mixed reviews, being criticized for its high price, technical issues, and lack of cross-platform play. The Nintendo Switch Edition received fairly positive reviews from critics, being praised, like other modern ports, for its relatively larger worlds. Minecraft: Pocket Edition initially received mixed reviews from critics. Although reviewers appreciated the game's intuitive controls, they were disappointed by the lack of content. The inability to collect resources and craft items, as well as the limited types of blocks and lack of hostile mobs, were especially criticized. After updates added more content, Pocket Edition started receiving more positive reviews. Reviewers complimented the controls and the graphics, but still noted a lack of content. Minecraft surpassed over a million purchases less than a month after entering its beta phase in early 2011. At the same time, the game had no publisher backing and has never been commercially advertised except through word of mouth, and various unpaid references in popular media such as the Penny Arcade webcomic. By April 2011, Persson estimated that Minecraft had made €23 million (US$33 million) in revenue, with 800,000 sales of the alpha version of the game, and over 1 million sales of the beta version. In November 2011, prior to the game's full release, Minecraft beta surpassed 16 million registered users and 4 million purchases. By March 2012, Minecraft had become the 6th best-selling PC game of all time. As of 10 October 2014[update], the game had sold 17 million copies on PC, becoming the best-selling PC game of all time. On 25 February 2014, the game reached 100 million registered users. By May 2019, 180 million copies had been sold across all platforms, making it the single best-selling video game of all time. The free-to-play Minecraft China version had over 700 million registered accounts by September 2023. By 2023, the game had sold over 300 million copies. As of April 2025, Minecraft has sold over 350 million copies. The Xbox 360 version of Minecraft became profitable within the first day of the game's release in 2012, when the game broke the Xbox Live sales records with 400,000 players online. Within a week of being on the Xbox Live Marketplace, Minecraft sold a million copies. GameSpot announced in December 2012 that Minecraft sold over 4.48 million copies since the game debuted on Xbox Live Arcade in May 2012. In 2012, Minecraft was the most purchased title on Xbox Live Arcade; it was also the fourth most played title on Xbox Live based on average unique users per day. As of 4 April 2014[update], the Xbox 360 version has sold 12 million copies. In addition, Minecraft: Pocket Edition has reached a figure of 21 million in sales. The PlayStation 3 Edition sold one million copies in five weeks. The release of the game's PlayStation Vita version boosted Minecraft sales by 79%, outselling both PS3 and PS4 debut releases and becoming the largest Minecraft launch on a PlayStation console. The PS Vita version sold 100,000 digital copies in Japan within the first two months of release, according to an announcement by SCE Japan Asia. By January 2015, 500,000 digital copies of Minecraft were sold in Japan across all PlayStation platforms, with a surge in primary school children purchasing the PS Vita version. As of 2022, the Vita version has sold over 1.65 million physical copies in Japan, making it the best-selling Vita game in the country. Minecraft helped improve Microsoft's total first-party revenue by $63 million for the 2015 second quarter. The game, including all of its versions, had over 112 million monthly active players by September 2019. On its 11th anniversary in May 2020, the company announced that Minecraft had reached over 200 million copies sold across platforms with over 126 million monthly active players. By April 2021, the number of active monthly users had climbed to 140 million. In July 2010, PC Gamer listed Minecraft as the fourth-best game to play at work. In December of that year, Good Game selected Minecraft as their choice for Best Downloadable Game of 2010, Gamasutra named it the eighth best game of the year as well as the eighth best indie game of the year, and Rock, Paper, Shotgun named it the "game of the year". Indie DB awarded the game the 2010 Indie of the Year award as chosen by voters, in addition to two out of five Editor's Choice awards for Most Innovative and Best Singleplayer Indie. It was also awarded Game of the Year by PC Gamer UK. The game was nominated for the Seumas McNally Grand Prize, Technical Excellence, and Excellence in Design awards at the March 2011 Independent Games Festival and won the Grand Prize and the community-voted Audience Award. At Game Developers Choice Awards 2011, Minecraft won awards in the categories for Best Debut Game, Best Downloadable Game and Innovation Award, winning every award for which it was nominated. It also won GameCity's video game arts award. On 5 May 2011, Minecraft was selected as one of the 80 games that would be displayed at the Smithsonian American Art Museum as part of The Art of Video Games exhibit that opened on 16 March 2012. At the 2011 Spike Video Game Awards, Minecraft won the award for Best Independent Game and was nominated in the Best PC Game category. In 2012, at the British Academy Video Games Awards, Minecraft was nominated in the GAME Award of 2011 category and Persson received The Special Award. In 2012, Minecraft XBLA was awarded a Golden Joystick Award in the Best Downloadable Game category, and a TIGA Games Industry Award in the Best Arcade Game category. In 2013, it was nominated as the family game of the year at the British Academy Video Games Awards. During the 16th Annual D.I.C.E. Awards, the Academy of Interactive Arts & Sciences nominated the Xbox 360 version of Minecraft for "Strategy/Simulation Game of the Year". Minecraft Console Edition won the award for TIGA Game Of The Year in 2014. In 2015, the game placed 6th on USgamer's The 15 Best Games Since 2000 list. In 2016, Minecraft placed 6th on Time's The 50 Best Video Games of All Time list. Minecraft was nominated for the 2013 Kids' Choice Awards for Favorite App, but lost to Temple Run. It was nominated for the 2014 Kids' Choice Awards for Favorite Video Game, but lost to Just Dance 2014. The game later won the award for the Most Addicting Game at the 2015 Kids' Choice Awards. In addition, the Java Edition was nominated for "Favorite Video Game" at the 2018 Kids' Choice Awards, while the game itself won the "Still Playing" award at the 2019 Golden Joystick Awards, as well as the "Favorite Video Game" award at the 2020 Kids' Choice Awards. Minecraft also won "Stream Game of the Year" at inaugural Streamer Awards in 2021. The game later garnered a Nickelodeon Kids' Choice Award nomination for Favorite Video Game in 2021, and won the same category in 2022 and 2023. At the Golden Joystick Awards 2025, it won the Still Playing Award - PC and Console. Minecraft has been subject to several notable controversies. In June 2014, Mojang announced that it would begin enforcing the portion of Minecraft's end-user license agreement (EULA) which prohibits servers from giving in-game advantages to players in exchange for donations or payments. Spokesperson Owen Hill stated that servers could still require players to pay a fee to access the server and could sell in-game cosmetic items. The change was supported by Persson, citing emails he received from parents of children who had spent hundreds of dollars on servers. The Minecraft community and server owners protested, arguing that the EULA's terms were more broad than Mojang was claiming, that the crackdown would force smaller servers to shut down for financial reasons, and that Mojang was suppressing competition for its own Minecraft Realms subscription service. The controversy contributed to Notch's decision to sell Mojang. In 2020, Mojang announced an eventual change to the Java Edition to require a login from a Microsoft account rather than a Mojang account, the latter of which would be sunsetted. This also required Java Edition players to create Xbox network Gamertags. Mojang defended the move to Microsoft accounts by saying that improved security could be offered, including two-factor authentication, blocking cyberbullies in chat, and improved parental controls. The community responded with intense backlash, citing various technical difficulties encountered in the process and how account migration would be mandatory, even for those who do not play on servers. As of 10 March 2022, Microsoft required that all players migrate in order to maintain access the Java Edition of Minecraft. Mojang announced a deadline of 19 September 2023 for account migration, after which all legacy Mojang accounts became inaccessible and unable to be migrated. In June 2022, Mojang added a player-reporting feature in Java Edition. Players could report other players on multiplayer servers for sending messages prohibited by the Xbox Live Code of Conduct; report categories included profane language,[l] substance abuse, hate speech, threats of violence, and nudity. If a player was found to be in violation of Xbox Community Standards, they would be banned from all servers for a specific period of time or permanently. The update containing the report feature (1.19.1) was released on 27 July 2022. Mojang received substantial backlash and protest from community members, one of the most common complaints being that banned players would be forbidden from joining any server, even private ones. Others took issue to what they saw as Microsoft increasing control over its player base and exercising censorship, leading some to start a hashtag #saveminecraft and dub the version "1.19.84", a reference to the dystopian novel Nineteen Eighty-Four. The "Mob Vote" was an online event organized by Mojang in which the Minecraft community voted between three original mob concepts; initially, the winning mob was to be implemented in a future update, while the losing mobs were scrapped, though after the first mob vote this was changed, and losing mobs would now have a chance to come to the game in the future. The first Mob Vote was held during Minecon Earth 2017 and became an annual event starting with Minecraft Live 2020. The Mob Vote was often criticized for forcing players to choose one mob instead of implementing all three, causing divisions and flaming within the community, and potentially allowing internet bots and Minecraft content creators with large fanbases to conduct vote brigading. The Mob Vote was also blamed for a perceived lack of new content added to Minecraft since Microsoft's acquisition of Mojang in 2014. The 2023 Mob Vote featured three passive mobs—the crab, the penguin, and the armadillo—with voting scheduled to start on 13 October. In response, a Change.org petition was created on 6 October, demanding that Mojang eliminate the Mob Vote and instead implement all three mobs going forward. The petition received approximately 445,000 signatures by 13 October and was joined by calls to boycott the Mob Vote, as well as a partially tongue-in-cheek "revolutionary" propaganda campaign in which sympathizers created anti-Mojang and pro-boycott posters in the vein of real 20th century propaganda posters. Mojang did not release an official response to the boycott, and the Mob Vote otherwise proceeded normally, with the armadillo winning the vote. In September 2024, as part of a blog post detailing their future plans for Minecraft's development, Mojang announced the Mob Vote would be retired. Cultural impact In September 2019, The Guardian classified Minecraft as the best video game of the 21st century to date, and in November 2019, Polygon called it the "most important game of the decade" in its 2010s "decade in review". In June 2020, Minecraft was inducted into the World Video Game Hall of Fame. Minecraft is recognized as one of the first successful games to use an early access model to draw in sales prior to its full release version to help fund development. As Minecraft helped to bolster indie game development in the early 2010s, it also helped to popularize the use of the early access model in indie game development. Social media sites such as YouTube, Facebook, and Reddit have played a significant role in popularizing Minecraft. Research conducted by the Annenberg School for Communication at the University of Pennsylvania showed that one-third of Minecraft players learned about the game via Internet videos. In 2010, Minecraft-related videos began to gain influence on YouTube, often made by commentators. The videos usually contain screen-capture footage of the game and voice-overs. Common coverage in the videos includes creations made by players, walkthroughs of various tasks, and parodies of works in popular culture. By May 2012, over four million Minecraft-related YouTube videos had been uploaded. The game would go on to be a prominent fixture within YouTube's gaming scene during the entire 2010s; in 2014, it was the second-most searched term on the entire platform. By 2018, it was still YouTube's biggest game globally. Some popular commentators have received employment at Machinima, a now-defunct gaming video company that owned a highly watched entertainment channel on YouTube. The Yogscast is a British company that regularly produces Minecraft videos; their YouTube channel has attained billions of views, and their panel at Minecon 2011 had the highest attendance. Another well-known YouTube personality is Jordan Maron, known online as CaptainSparklez, who has also created many Minecraft music parodies, including "Revenge", a parody of Usher's "DJ Got Us Fallin' in Love". Minecraft's popularity on YouTube was described by Polygon as quietly dominant, although in 2019, thanks in part to PewDiePie's playthroughs of the game, Minecraft experienced a visible uptick in popularity on the platform. Longer-running series include Far Lands or Bust, dedicated to reaching the obsolete "Far Lands" glitch by foot on an older version of the game. YouTube announced that on 14 December 2021 that the total amount of Minecraft-related views on the website had exceeded one trillion. Minecraft has been referenced by other video games, such as Torchlight II, Team Fortress 2, Borderlands 2, Choplifter HD, Super Meat Boy, The Elder Scrolls V: Skyrim, The Binding of Isaac, The Stanley Parable, and FTL: Faster Than Light. Minecraft is officially represented in downloadable content for the crossover fighter Super Smash Bros. Ultimate, with Steve as a playable character with a moveset including references to building, crafting, and redstone, alongside an Overworld-themed stage. It was also referenced by electronic music artist Deadmau5 in his performances. The game is also referenced heavily in "Informative Murder Porn", the second episode of the seventeenth season of the animated television series South Park. In 2025, A Minecraft Movie was released. It made $313 million in the box office in the first week, a record-breaking opening for a video game adaptation. Minecraft has been noted as a cultural touchstone for Generation Z, as many of the generation's members played the game at a young age. The possible applications of Minecraft have been discussed extensively, especially in the fields of computer-aided design (CAD) and education. In a panel at Minecon 2011, a Swedish developer discussed the possibility of using the game to redesign public buildings and parks, stating that rendering using Minecraft was much more user-friendly for the community, making it easier to envision the functionality of new buildings and parks. In 2012, a member of the Human Dynamics group at the MIT Media Lab, Cody Sumter, said: "Notch hasn't just built a game. He's tricked 40 million people into learning to use a CAD program." Various software has been developed to allow virtual designs to be printed using professional 3D printers or personal printers such as MakerBot and RepRap. In September 2012, Mojang began the Block by Block project in cooperation with UN Habitat to create real-world environments in Minecraft. The project allows young people who live in those environments to participate in designing the changes they would like to see. Using Minecraft, the community has helped reconstruct the areas of concern, and citizens are invited to enter the Minecraft servers and modify their own neighborhood. Carl Manneh, Mojang's managing director, called the game "the perfect tool to facilitate this process", adding "The three-year partnership will support UN-Habitat's Sustainable Urban Development Network to upgrade 300 public spaces by 2016." Mojang signed Minecraft building community, FyreUK, to help render the environments into Minecraft. The first pilot project began in Kibera, one of Nairobi's informal settlements and is in the planning phase. The Block by Block project is based on an earlier initiative started in October 2011, Mina Kvarter (My Block), which gave young people in Swedish communities a tool to visualize how they wanted to change their part of town. According to Manneh, the project was a helpful way to visualize urban planning ideas without necessarily having a training in architecture. The ideas presented by the citizens were a template for political decisions. In April 2014, the Danish Geodata Agency generated all of Denmark in fullscale in Minecraft based on their own geodata. This is possible because Denmark is one of the flattest countries with the highest point at 171 meters (ranking as the country with the 30th smallest elevation span), where the limit in default Minecraft was around 192 meters above in-game sea level when the project was completed. Taking advantage of the game's accessibility where other websites are censored, the non-governmental organization Reporters Without Borders has used an open Minecraft server to create the Uncensored Library, a repository within the game of journalism by authors from countries (including Egypt, Mexico, Russia, Saudi Arabia and Vietnam) who have been censored and arrested, such as Jamal Khashoggi. The neoclassical virtual building was created over about 250 hours by an international team of 24 people. Despite its unpredictable nature, Minecraft speedrunning, where players time themselves from spawning into a new world to reaching The End and defeating the Ender Dragon boss, is popular. Some speedrunners use a combination of mods, external programs, and debug menus, while other runners play the game in a more vanilla or more consistency-oriented way. Minecraft has been used in educational settings through initiatives such as MinecraftEdu, founded in 2011 to make the game affordable and accessible for schools in collaboration with Mojang. MinecraftEdu provided features allowing teachers to monitor student progress, including screenshot submissions as evidence of lesson completion, and by 2012 reported that approximately 250,000 students worldwide had access to the platform. Mojang also developed Minecraft: Education Edition with pre-built lesson plans for up to 30 students in a closed environment. Educators have used Minecraft to teach subjects such as history, language arts, and science through custom-built environments, including reconstructions of historical landmarks and large-scale models of biological structures such as animal cells. The introduction of redstone blocks enabled the construction of functional virtual machines such as a hard drive and an 8-bit computer. Mods have been created to use these mechanics for teaching programming. In 2014, the British Museum announced a project to reproduce its building and exhibits in Minecraft in collaboration with the public. Microsoft and Code.org have offered Minecraft-based tutorials and activities designed to teach programming, reporting by 2018 that more than 85 million children had used their resources. In 2025, the Musée de Minéralogie in Paris held a temporary exhibition titled "Minerals in Minecraft." Following the initial surge in popularity of Minecraft in 2010, other video games were criticised for having various similarities to Minecraft, and some were described as being "clones", often due to a direct inspiration from Minecraft, or a superficial similarity. Examples include Ace of Spades, CastleMiner, CraftWorld, FortressCraft, Terraria, BlockWorld 3D, Total Miner, and Luanti (formerly Minetest). David Frampton, designer of The Blockheads, reported that one failure of his 2D game was the "low resolution pixel art" that too closely resembled the art in Minecraft, which resulted in "some resistance" from fans. A homebrew adaptation of the alpha version of Minecraft for the Nintendo DS, titled DScraft, has been released; it has been noted for its similarity to the original game considering the technical limitations of the system. In response to Microsoft's acquisition of Mojang and their Minecraft IP, various developers announced further clone titles developed specifically for Nintendo's consoles, as they were the only major platforms not to officially receive Minecraft at the time. These clone titles include UCraft (Nexis Games), Cube Life: Island Survival (Cypronia), Discovery (Noowanda), Battleminer (Wobbly Tooth Games), Cube Creator 3D (Big John Games), and Stone Shire (Finger Gun Games). Despite this, the fears of fans were unfounded, with official Minecraft releases on Nintendo consoles eventually resuming. Markus Persson made another similar game, Minicraft, for a Ludum Dare competition in 2011. In 2025, Persson announced through a poll on his X account that he was considering developing a spiritual successor to Minecraft. He later clarified that he was "100% serious", and that he had "basically announced Minecraft 2". Within days, however, Persson cancelled the plans after speaking to his team. In November 2024, artificial intelligence companies Decart and Etched released Oasis, an artificially generated version of Minecraft, as a proof of concept. Every in-game element is completely AI-generated in real time and the model does not store world data, leading to "hallucinations" such as items and blocks appearing that were not there before. In January 2026, indie game developer Unomelon announced that their voxel sandbox game Allumeria would be playable in Steam Next Fest that year. On 10 February, Mojang issued a DMCA takedown of Allumeria on Steam through Valve, alleging the game was infringing on Minecraft's copyright. Some reports suggested that the takedown may have used an automatic AI copyright claiming service. The DMCA was later withdrawn. Minecon was an annual official fan convention dedicated to Minecraft. The first full Minecon was held in November 2011 at the Mandalay Bay Hotel and Casino in Las Vegas. The event included the official launch of Minecraft; keynote speeches, including one by Persson; building and costume contests; Minecraft-themed breakout classes; exhibits by leading gaming and Minecraft-related companies; commemorative merchandise; and autograph and picture times with Mojang employees and well-known contributors from the Minecraft community. In 2016, Minecon was held in-person for the last time, with the following years featuring annual "Minecon Earth" livestreams on minecraft.net and YouTube instead. These livestreams, later rebranded to "Minecraft Live", included the mob/biome votes, and announcements of new game updates. In 2025, "Minecraft Live" became a biannual event as part of Minecraft's changing update schedule.[citation needed] Notes References External links |
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[SOURCE: https://en.wikipedia.org/wiki/Legal_affairs_of_Elon_Musk] | [TOKENS: 1892] |
Contents Legal affairs of Elon Musk The legal affairs of Elon Musk encompass the legal cases involving Elon Musk as the plaintiff, defendant, or concerning his companies. SEC and shareholder lawsuits regarding tweets In 2018, Musk was sued by the SEC for a tweet stating that funding had been secured for potentially taking Tesla private.[a] The lawsuit characterized the tweet as false, misleading, and damaging to investors, and sought to bar Musk from serving as CEO of publicly traded companies. Two days later, Musk settled with the SEC, without admitting or denying the SEC's allegations. As a result, Musk and Tesla were fined $20 million each, and Musk was forced to step down for three years as Tesla chairman but was able to remain as CEO. Shareholders filed a lawsuit over the tweet, and in February 2023, a jury found Musk and Tesla not liable. Musk has stated in interviews that he does not regret posting the tweet that triggered the SEC investigation. In 2019, Musk stated in a tweet that Tesla would build half a million cars that year. The SEC reacted by asking a court to hold him in contempt for violating the terms of the 2018 settlement agreement. A joint agreement between Musk and the SEC eventually clarified the previous agreement details, including a list of topics about which Musk needed preclearance. In 2020, a judge blocked a lawsuit that claimed a tweet by Musk regarding Tesla stock price ("too high imo") violated the agreement. Freedom of Information Act (FOIA)-released records showed that the SEC concluded Musk had subsequently violated the agreement twice by tweeting regarding "Tesla's solar roof production volumes and its stock price". Tham Luang cave rescue and defamation case In July 2018, Musk arranged for his employees to build a mini-submarine to assist the rescue of children trapped in a flooded cavern in Thailand. Richard Stanton, leader of the international rescue diving team, encouraged Musk to facilitate the construction of the vehicle as a backup in case flooding worsened. However, Stanton concluded that the mini-submarine would not work and said that Musk's involvement "distracted from the rescue effort". Engineers at SpaceX and the Boring Company built the mini-submarine from a Falcon 9 liquid oxygen transfer tube in eight hours and personally delivered it to Thailand. Thai authorities ultimately declined to use the submarine, stating that it was not practical for the rescue mission. In March 2019, Musk was one of the 187 people who received various honors conferred by the King of Thailand for involvement in the rescue effort. Soon after the rescue, Vernon Unsworth, a British recreational caver who had been exploring the cave for the previous six years and played a key advisory role in the operation, criticized the submarine on CNN as amounting to nothing more than a public relations effort with no chance of success, maintaining that Musk "had no conception of what the cave passage was like" and "can stick his submarine where it hurts". Musk asserted on Twitter that the device would have worked and referred to Unsworth as a "pedo guy". He then deleted the tweets, apologized, and deleted his responses to critical tweets from Cher Scarlett, a software engineer, which had caused his followers to harass her. In an email to BuzzFeed News, Musk later called Unsworth a "child rapist" and said that he had married a child. In September, Unsworth filed a defamation suit seeking $190 million in damages. In his defense, Musk argued that "'pedo guy' was a common insult used in South Africa when I was growing up ... synonymous with 'creepy old man' and is used to insult a person's appearance and demeanor." During the trial Musk apologized to Unsworth again for the tweet. In December 2019, the jury ruled that Musk was not liable. Legal matters after 2020 In May 2022, Business Insider cited an anonymous friend of an unnamed SpaceX contract flight attendant, alleging that Musk engaged in sexual misconduct in 2016. The source stated that in November 2018, Musk, SpaceX, and the former flight attendant entered into a severance agreement granting the attendant a $250,000 payment in exchange for a promise not to sue over the claims. Musk responded, "If I were inclined to engage in sexual harassment, this is unlikely to be the first time in my entire 30-year career that it comes to light." He accused the article from Business Insider of being a "politically motivated hit piece". After the release of the article, Tesla's stock fell by more than 6%, and Barron's wrote of the fall that "some investors considered key-man risk – the danger that a company could be badly hurt by the loss of one individual." In April 2023, the government of the U.S. Virgin Islands sought to subpoena Musk for documents in a lawsuit alleging that JPMorgan Chase profited from Jeffrey Epstein's sex trafficking operation. The efforts to subpoena Musk for documents do not implicate him in any wrongdoing and do not seek to have Musk testify under oath. Musk's former girlfriend Grimes filed a parental relationship petition in late September 2023 as part of a custody dispute. The petition came a month after Grimes openly accused him in a social media post of blocking her access to the youngest of their three children. On July 27, 2024, Grimes' mother accused Musk of withholding the passports of her grandchildren. Ben Brody, a 22-year-old Los Angeles-based college graduate, initiated a defamation lawsuit in October 2023 against Musk for over $1 million. He alleged Musk had falsely identified him as a participant "in a violent street brawl on behalf of a neo-Nazi extremist group" near Portland, Oregon. According to Brody's complaint, one of Musk's X posts promoted conspiracy theories that "Ben Brody's alleged participation in the extremist brawl meant the incident was probably a 'false flag' operation to deceive the American public". The complaint also alleged that Musk's accusations led to Brody and his family being subjected to harassment and threats. In February 2024, Musk was ordered to testify in a deposition for the lawsuit. In the deposition, Musk denied knowing who was suing him and admitted to doing no research on whether his claims were true. Musk attempted to keep the deposition from being made public. In October 2023, the U.S. Securities and Exchange Commission (SEC) sued Musk over his refusal to testify a third time in an investigation into whether he violated federal law by purchasing Twitter stock in 2022. Musk claimed the SEC was harassing him. In February 2024, Judge Laurel Beeler ruled that Musk must testify again. In January 2025, the SEC filed a lawsuit against Musk for securities violations related to his purchase of Twitter. In January 2024, Delaware Judge Kathaleen McCormick ruled in a 2018 lawsuit that Musk's $55 billion pay package from Tesla be rescinded. McCormick called the compensation granted by the company's board "an unfathomable sum" that was unfair to shareholders. In response to the ruling, Musk posted on X: "Never incorporate your company in the state of Delaware." A re-ratification shareholders' vote passed in mid-June 2024. The Delaware Supreme Court overturned the decision in December 2025, restoring Musk's compensation package and awarding $1 in nominal damages. In February 2024 Musk sued OpenAI, its chief executive Sam Altman, and president Greg Brockman over the company violating its founding agreement by prioritizing profits over benefits to humanity. In June 2024, The Wall Street Journal reported Musk had a "romantic relationship" with a former intern at SpaceX, confirmed with affidavits supplied by the intern's lawyers who also represent Musk, and alleged that he had sexual relations with a woman who directly reported to him there. The article further alleges he also pursued sex with other SpaceX employees, and repeatedly asked an employee who reported directly to him to "have his babies". In the same month, eight ex-employees, the same eight who were previously fired for penning an anti-Musk letter at SpaceX, filed a lawsuit against Musk alleging sexual harassment. Also in June 2024, a former Twitter executive sued Musk for "cheating" him and other ousted executives out of $200 million in severance pay. In August 2024, Musk sued advertisers for a boycott of X (formerly Twitter). Later that month, Olympic boxer Imane Khelif filed a criminal complaint with the French police about cyber harassment against X over alleged "acts of aggravated cyber harassment", in which Musk was named. In October 2024, Musk and his America PAC were sued in Pennsylvania for allegedly operating an unlawful lottery before the 2024 US presidential election. In November 2024, he was sued again regarding the lottery and two US senators called for a probe into alleged contacts with Vladimir Putin. In August 2025, U.S. District Judge Robert Pitman allowed Jacqueline McAferty to proceed with her lottery over the lawsuit. In February 2025, Ashley St. Clair filed suit against Musk alleging him to be the father of her child identified as R.S.C., born in September 2024. In her pleadings, St. Clair demanded a DNA test, an Order of Filiation (paternity), sole custody and child support. Notes References |
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[SOURCE: https://en.wikipedia.org/wiki/Lod#cite_note-:0-3] | [TOKENS: 4733] |
Contents Lod Lod (Hebrew: לוד, fully vocalized: לֹד), also known as Lydda (Ancient Greek: Λύδδα) and Lidd (Arabic: اللِّدّ, romanized: al-Lidd, or اللُّدّ, al-Ludd), is a city 15 km (9+1⁄2 mi) southeast of Tel Aviv and 40 km (25 mi) northwest of Jerusalem in the Central District of Israel. It is situated between the lower Shephelah on the east and the coastal plain on the west. The city had a population of 90,814 in 2023. Lod has been inhabited since at least the Neolithic period. It is mentioned a few times in the Hebrew Bible and in the New Testament. Between the 5th century BCE and up until the late Roman period, it was a prominent center for Jewish scholarship and trade. Around 200 CE, the city became a Roman colony and was renamed Diospolis (Ancient Greek: Διόσπολις, lit. 'city of Zeus'). Tradition identifies Lod as the 4th century martyrdom site of Saint George; the Church of Saint George and Mosque of Al-Khadr located in the city is believed to have housed his remains. Following the Arab conquest of the Levant, Lod served as the capital of Jund Filastin; however, a few decades later, the seat of power was transferred to Ramla, and Lod slipped in importance. Under Crusader rule, the city was a Catholic diocese of the Latin Church and it remains a titular see to this day.[citation needed] Lod underwent a major change in its population in the mid-20th century. Exclusively Palestinian Arab in 1947, Lod was part of the area designated for an Arab state in the United Nations Partition Plan for Palestine; however, in July 1948, the city was occupied by the Israel Defense Forces, and most of its Arab inhabitants were expelled in the Palestinian expulsion from Lydda and Ramle. The city was largely resettled by Jewish immigrants, most of them expelled from Arab countries. Today, Lod is one of Israel's mixed cities, with an Arab population of 30%. Lod is one of Israel's major transportation hubs. The main international airport, Ben Gurion Airport, is located 8 km (5 miles) north of the city. The city is also a major railway and road junction. Religious references The Hebrew name Lod appears in the Hebrew Bible as a town of Benjamin, founded along with Ono by Shamed or Shamer (1 Chronicles 8:12; Ezra 2:33; Nehemiah 7:37; 11:35). In Ezra 2:33, it is mentioned as one of the cities whose inhabitants returned after the Babylonian captivity. Lod is not mentioned among the towns allocated to the tribe of Benjamin in Joshua 18:11–28. The name Lod derives from a tri-consonantal root not extant in Northwest Semitic, but only in Arabic (“to quarrel; withhold, hinder”). An Arabic etymology of such an ancient name is unlikely (the earliest attestation is from the Achaemenid period). In the New Testament, the town appears in its Greek form, Lydda, as the site of Peter's healing of Aeneas in Acts 9:32–38. The city is also mentioned in an Islamic hadith as the location of the battlefield where the false messiah (al-Masih ad-Dajjal) will be slain before the Day of Judgment. History The first occupation dates to the Neolithic in the Near East and is associated with the Lodian culture. Occupation continued in the Levant Chalcolithic. Pottery finds have dated the initial settlement in the area now occupied by the town to 5600–5250 BCE. In the Early Bronze, it was an important settlement in the central coastal plain between the Judean Shephelah and the Mediterranean coast, along Nahal Ayalon. Other important nearby sites were Tel Dalit, Tel Bareqet, Khirbat Abu Hamid (Shoham North), Tel Afeq, Azor and Jaffa. Two architectural phases belong to the late EB I in Area B. The first phase had a mudbrick wall, while the late phase included a circulat stone structure. Later excavations have produced an occupation later, Stratum IV. It consists of two phases, Stratum IVb with mudbrick wall on stone foundations and rounded exterior corners. In Stratum IVa there was a mudbrick wall with no stone foundations, with imported Egyptian potter and local pottery imitations. Another excavations revealed nine occupation strata. Strata VI-III belonged to Early Bronze IB. The material culture showed Egyptian imports in strata V and IV. Occupation continued into Early Bronze II with four strata (V-II). There was continuity in the material culture and indications of centralized urban planning. North to the tell were scattered MB II burials. The earliest written record is in a list of Canaanite towns drawn up by the Egyptian pharaoh Thutmose III at Karnak in 1465 BCE. From the fifth century BCE until the Roman period, the city was a centre of Jewish scholarship and commerce. According to British historian Martin Gilbert, during the Hasmonean period, Jonathan Maccabee and his brother, Simon Maccabaeus, enlarged the area under Jewish control, which included conquering the city. The Jewish community in Lod during the Mishnah and Talmud era is described in a significant number of sources, including information on its institutions, demographics, and way of life. The city reached its height as a Jewish center between the First Jewish-Roman War and the Bar Kokhba revolt, and again in the days of Judah ha-Nasi and the start of the Amoraim period. The city was then the site of numerous public institutions, including schools, study houses, and synagogues. In 43 BC, Cassius, the Roman governor of Syria, sold the inhabitants of Lod into slavery, but they were set free two years later by Mark Antony. During the First Jewish–Roman War, the Roman proconsul of Syria, Cestius Gallus, razed the town on his way to Jerusalem in Tishrei 66 CE. According to Josephus, "[he] found the city deserted, for the entire population had gone up to Jerusalem for the Feast of Tabernacles. He killed fifty people whom he found, burned the town and marched on". Lydda was occupied by Emperor Vespasian in 68 CE. In the period following the destruction of Jerusalem in 70 CE, Rabbi Tarfon, who appears in many Tannaitic and Jewish legal discussions, served as a rabbinic authority in Lod. During the Kitos War, 115–117 CE, the Roman army laid siege to Lod, where the rebel Jews had gathered under the leadership of Julian and Pappos. Torah study was outlawed by the Romans and pursued mostly in the underground. The distress became so great, the patriarch Rabban Gamaliel II, who was shut up there and died soon afterwards, permitted fasting on Ḥanukkah. Other rabbis disagreed with this ruling. Lydda was next taken and many of the Jews were executed; the "slain of Lydda" are often mentioned in words of reverential praise in the Talmud. In 200 CE, emperor Septimius Severus elevated the town to the status of a city, calling it Colonia Lucia Septimia Severa Diospolis. The name Diospolis ("City of Zeus") may have been bestowed earlier, possibly by Hadrian. At that point, most of its inhabitants were Christian. The earliest known bishop is Aëtius, a friend of Arius. During the following century (200-300CE), it's said that Joshua ben Levi founded a yeshiva in Lod. In December 415, the Council of Diospolis was held here to try Pelagius; he was acquitted. In the sixth century, the city was renamed Georgiopolis after St. George, a soldier in the guard of the emperor Diocletian, who was born there between 256 and 285 CE. The Church of Saint George and Mosque of Al-Khadr is named for him. The 6th-century Madaba map shows Lydda as an unwalled city with a cluster of buildings under a black inscription reading "Lod, also Lydea, also Diospolis". An isolated large building with a semicircular colonnaded plaza in front of it might represent the St George shrine. After the Muslim conquest of Palestine by Amr ibn al-'As in 636 CE, Lod which was referred to as "al-Ludd" in Arabic served as the capital of Jund Filastin ("Military District of Palaestina") before the seat of power was moved to nearby Ramla during the reign of the Umayyad Caliph Suleiman ibn Abd al-Malik in 715–716. The population of al-Ludd was relocated to Ramla, as well. With the relocation of its inhabitants and the construction of the White Mosque in Ramla, al-Ludd lost its importance and fell into decay. The city was visited by the local Arab geographer al-Muqaddasi in 985, when it was under the Fatimid Caliphate, and was noted for its Great Mosque which served the residents of al-Ludd, Ramla, and the nearby villages. He also wrote of the city's "wonderful church (of St. George) at the gate of which Christ will slay the Antichrist." The Crusaders occupied the city in 1099 and named it St Jorge de Lidde. It was briefly conquered by Saladin, but retaken by the Crusaders in 1191. For the English Crusaders, it was a place of great significance as the birthplace of Saint George. The Crusaders made it the seat of a Latin Church diocese, and it remains a titular see. It owed the service of 10 knights and 20 sergeants, and it had its own burgess court during this era. In 1226, Ayyubid Syrian geographer Yaqut al-Hamawi visited al-Ludd and stated it was part of the Jerusalem District during Ayyubid rule. Sultan Baybars brought Lydda again under Muslim control by 1267–8. According to Qalqashandi, Lydda was an administrative centre of a wilaya during the fourteenth and fifteenth century in the Mamluk empire. Mujir al-Din described it as a pleasant village with an active Friday mosque. During this time, Lydda was a station on the postal route between Cairo and Damascus. In 1517, Lydda was incorporated into the Ottoman Empire as part of the Damascus Eyalet, and in the 1550s, the revenues of Lydda were designated for the new waqf of Hasseki Sultan Imaret in Jerusalem, established by Hasseki Hurrem Sultan (Roxelana), the wife of Suleiman the Magnificent. By 1596 Lydda was a part of the nahiya ("subdistrict") of Ramla, which was under the administration of the liwa ("district") of Gaza. It had a population of 241 households and 14 bachelors who were all Muslims, and 233 households who were Christians. They paid a fixed tax-rate of 33,3 % on agricultural products, including wheat, barley, summer crops, vineyards, fruit trees, sesame, special product ("dawalib" =spinning wheels), goats and beehives, in addition to occasional revenues and market toll, a total of 45,000 Akçe. All of the revenue went to the Waqf. In 1051 AH/1641/2, the Bedouin tribe of al-Sawālima from around Jaffa attacked the villages of Subṭāra, Bayt Dajan, al-Sāfiriya, Jindās, Lydda and Yāzūr belonging to Waqf Haseki Sultan. The village appeared as Lydda, though misplaced, on the map of Pierre Jacotin compiled in 1799. Missionary William M. Thomson visited Lydda in the mid-19th century, describing it as a "flourishing village of some 2,000 inhabitants, imbosomed in noble orchards of olive, fig, pomegranate, mulberry, sycamore, and other trees, surrounded every way by a very fertile neighbourhood. The inhabitants are evidently industrious and thriving, and the whole country between this and Ramleh is fast being filled up with their flourishing orchards. Rarely have I beheld a rural scene more delightful than this presented in early harvest ... It must be seen, heard, and enjoyed to be appreciated." In 1869, the population of Ludd was given as: 55 Catholics, 1,940 "Greeks", 5 Protestants and 4,850 Muslims. In 1870, the Church of Saint George was rebuilt. In 1892, the first railway station in the entire region was established in the city. In the second half of the 19th century, Jewish merchants migrated to the city, but left after the 1921 Jaffa riots. In 1882, the Palestine Exploration Fund's Survey of Western Palestine described Lod as "A small town, standing among enclosure of prickly pear, and having fine olive groves around it, especially to the south. The minaret of the mosque is a very conspicuous object over the whole of the plain. The inhabitants are principally Moslim, though the place is the seat of a Greek bishop resident of Jerusalem. The Crusading church has lately been restored, and is used by the Greeks. Wells are found in the gardens...." From 1918, Lydda was under the administration of the British Mandate in Palestine, as per a League of Nations decree that followed the Great War. During the Second World War, the British set up supply posts in and around Lydda and its railway station, also building an airport that was renamed Ben Gurion Airport after the death of Israel's first prime minister in 1973. At the time of the 1922 census of Palestine, Lydda had a population of 8,103 inhabitants (7,166 Muslims, 926 Christians, and 11 Jews), the Christians were 921 Orthodox, 4 Roman Catholics and 1 Melkite. This had increased by the 1931 census to 11,250 (10,002 Muslims, 1,210 Christians, 28 Jews, and 10 Bahai), in a total of 2475 residential houses. In 1938, Lydda had a population of 12,750. In 1945, Lydda had a population of 16,780 (14,910 Muslims, 1,840 Christians, 20 Jews and 10 "other"). Until 1948, Lydda was an Arab town with a population of around 20,000—18,500 Muslims and 1,500 Christians. In 1947, the United Nations proposed dividing Mandatory Palestine into two states, one Jewish state and one Arab; Lydda was to form part of the proposed Arab state. In the ensuing war, Israel captured Arab towns outside the area the UN had allotted it, including Lydda. In December 1947, thirteen Jewish passengers in a seven-car convoy to Ben Shemen Youth Village were ambushed and murdered.In a separate incident, three Jewish youths, two men and a woman were captured, then raped and murdered in a neighbouring village. Their bodies were paraded in Lydda’s principal street. The Israel Defense Forces entered Lydda on 11 July 1948. The following day, under the impression that it was under attack, the 3rd Battalion was ordered to shoot anyone "seen on the streets". According to Israel, 250 Arabs were killed. Other estimates are higher: Arab historian Aref al Aref estimated 400, and Nimr al Khatib 1,700. In 1948, the population rose to 50,000 during the Nakba, as Arab refugees fleeing other areas made their way there. A key event was the Palestinian expulsion from Lydda and Ramle, with the expulsion of 50,000-70,000 Palestinians from Lydda and Ramle by the Israel Defense Forces. All but 700 to 1,056 were expelled by order of the Israeli high command, and forced to walk 17 km (10+1⁄2 mi) to the Jordanian Arab Legion lines. Estimates of those who died from exhaustion and dehydration vary from a handful to 355. The town was subsequently sacked by the Israeli army. Some scholars, including Ilan Pappé, characterize this as ethnic cleansing. The few hundred Arabs who remained in the city were soon outnumbered by the influx of Jews who immigrated to Lod from August 1948 onward, most of them from Arab countries. As a result, Lod became a predominantly Jewish town. After the establishment of the state, the biblical name Lod was readopted. The Jewish immigrants who settled Lod came in waves, first from Morocco and Tunisia, later from Ethiopia, and then from the former Soviet Union. Since 2008, many urban development projects have been undertaken to improve the image of the city. Upscale neighbourhoods have been built, among them Ganei Ya'ar and Ahisemah, expanding the city to the east. According to a 2010 report in the Economist, a three-meter-high wall was built between Jewish and Arab neighbourhoods and construction in Jewish areas was given priority over construction in Arab neighborhoods. The newspaper says that violent crime in the Arab sector revolves mainly around family feuds over turf and honour crimes. In 2010, the Lod Community Foundation organised an event for representatives of bicultural youth movements, volunteer aid organisations, educational start-ups, businessmen, sports organizations, and conservationists working on programmes to better the city. In the 2021 Israel–Palestine crisis, a state of emergency was declared in Lod after Arab rioting led to the death of an Israeli Jew. The Mayor of Lod, Yair Revivio, urged Prime Minister of Israel Benjamin Netanyahu to deploy Israel Border Police to restore order in the city. This was the first time since 1966 that Israel had declared this kind of emergency lockdown. International media noted that both Jewish and Palestinian mobs were active in Lod, but the "crackdown came for one side" only. Demographics In the 19th century and until the Lydda Death March, Lod was an exclusively Muslim-Christian town, with an estimated 6,850 inhabitants, of whom approximately 2,000 (29%) were Christian. According to the Israel Central Bureau of Statistics (CBS), the population of Lod in 2010 was 69,500 people. According to the 2019 census, the population of Lod was 77,223, of which 53,581 people, comprising 69.4% of the city's population, were classified as "Jews and Others", and 23,642 people, comprising 30.6% as "Arab". Education According to CBS, 38 schools and 13,188 pupils are in the city. They are spread out as 26 elementary schools and 8,325 elementary school pupils, and 13 high schools and 4,863 high school pupils. About 52.5% of 12th-grade pupils were entitled to a matriculation certificate in 2001.[citation needed] Economy The airport and related industries are a major source of employment for the residents of Lod. Other important factories in the city are the communication equipment company "Talard", "Cafe-Co" - a subsidiary of the Strauss Group and "Kashev" - the computer center of Bank Leumi. A Jewish Agency Absorption Centre is also located in Lod. According to CBS figures for 2000, 23,032 people were salaried workers and 1,405 were self-employed. The mean monthly wage for a salaried worker was NIS 4,754, a real change of 2.9% over the course of 2000. Salaried men had a mean monthly wage of NIS 5,821 (a real change of 1.4%) versus NIS 3,547 for women (a real change of 4.6%). The mean income for the self-employed was NIS 4,991. About 1,275 people were receiving unemployment benefits and 7,145 were receiving an income supplement. Art and culture In 2009-2010, Dor Guez held an exhibit, Georgeopolis, at the Petach Tikva art museum that focuses on Lod. Archaeology A well-preserved mosaic floor dating to the Roman period was excavated in 1996 as part of a salvage dig conducted on behalf of the Israel Antiquities Authority and the Municipality of Lod, prior to widening HeHalutz Street. According to Jacob Fisch, executive director of the Friends of the Israel Antiquities Authority, a worker at the construction site noticed the tail of a tiger and halted work. The mosaic was initially covered over with soil at the conclusion of the excavation for lack of funds to conserve and develop the site. The mosaic is now part of the Lod Mosaic Archaeological Center. The floor, with its colorful display of birds, fish, exotic animals and merchant ships, is believed to have been commissioned by a wealthy resident of the city for his private home. The Lod Community Archaeology Program, which operates in ten Lod schools, five Jewish and five Israeli Arab, combines archaeological studies with participation in digs in Lod. Sports The city's major football club, Hapoel Bnei Lod, plays in Liga Leumit (the second division). Its home is at the Lod Municipal Stadium. The club was formed by a merger of Bnei Lod and Rakevet Lod in the 1980s. Two other clubs in the city play in the regional leagues: Hapoel MS Ortodoxim Lod in Liga Bet and Maccabi Lod in Liga Gimel. Hapoel Lod played in the top division during the 1960s and 1980s, and won the State Cup in 1984. The club folded in 2002. A new club, Hapoel Maxim Lod (named after former mayor Maxim Levy) was established soon after, but folded in 2007. Notable people Twin towns-sister cities Lod is twinned with: See also References Bibliography External links |
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[SOURCE: https://en.wikipedia.org/wiki/Python_(programming_language)#cite_note-4] | [TOKENS: 4314] |
Contents Python (programming language) Python is a high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is dynamically type-checked and garbage-collected. It supports multiple programming paradigms, including structured (particularly procedural), object-oriented and functional programming. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC programming language. Python 3.0, released in 2008, was a major revision and not completely backward-compatible with earlier versions. Beginning with Python 3.5, capabilities and keywords for typing were added to the language, allowing optional static typing. As of 2026[update], the Python Software Foundation supports Python 3.10, 3.11, 3.12, 3.13, and 3.14, following the project's annual release cycle and five-year support policy. Python 3.15 is currently in the alpha development phase, and the stable release is expected to come out in October 2026. Earlier versions in the 3.x series have reached end-of-life and no longer receive security updates. Python has gained widespread use in the machine learning community. It is widely taught as an introductory programming language. Since 2003, Python has consistently ranked in the top ten of the most popular programming languages in the TIOBE Programming Community Index, which ranks based on searches in 24 platforms. History Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. It was designed as a successor to the ABC programming language, which was inspired by SETL, capable of exception handling and interfacing with the Amoeba operating system. Python implementation began in December 1989. Van Rossum first released it in 1991 as Python 0.9.0. Van Rossum assumed sole responsibility for the project, as the lead developer, until 12 July 2018, when he announced his "permanent vacation" from responsibilities as Python's "benevolent dictator for life" (BDFL); this title was bestowed on him by the Python community to reflect his long-term commitment as the project's chief decision-maker. (He has since come out of retirement and is self-titled "BDFL-emeritus".) In January 2019, active Python core developers elected a five-member Steering Council to lead the project. The name Python derives from the British comedy series Monty Python's Flying Circus. (See § Naming.) Python 2.0 was released on 16 October 2000, featuring many new features such as list comprehensions, cycle-detecting garbage collection, reference counting, and Unicode support. Python 2.7's end-of-life was initially set for 2015, and then postponed to 2020 out of concern that a large body of existing code could not easily be forward-ported to Python 3. It no longer receives security patches or updates. While Python 2.7 and older versions are officially unsupported, a different unofficial Python implementation, PyPy, continues to support Python 2, i.e., "2.7.18+" (plus 3.11), with the plus signifying (at least some) "backported security updates". Python 3.0 was released on 3 December 2008, and was a major revision and not completely backward-compatible with earlier versions, with some new semantics and changed syntax. Python 2.7.18, released in 2020, was the last release of Python 2. Several releases in the Python 3.x series have added new syntax to the language, and made a few (considered very minor) backward-incompatible changes. As of January 2026[update], Python 3.14.3 is the latest stable release. All older 3.x versions had a security update down to Python 3.9.24 then again with 3.9.25, the final version in 3.9 series. Python 3.10 is, since November 2025, the oldest supported branch. Python 3.15 has an alpha released, and Android has an official downloadable executable available for Python 3.14. Releases receive two years of full support followed by three years of security support. Design philosophy and features Python is a multi-paradigm programming language. Object-oriented programming and structured programming are fully supported, and many of their features support functional programming and aspect-oriented programming – including metaprogramming and metaobjects. Many other paradigms are supported via extensions, including design by contract and logic programming. Python is often referred to as a 'glue language' because it is purposely designed to be able to integrate components written in other languages. Python uses dynamic typing and a combination of reference counting and a cycle-detecting garbage collector for memory management. It uses dynamic name resolution (late binding), which binds method and variable names during program execution. Python's design offers some support for functional programming in the "Lisp tradition". It has filter, map, and reduce functions; list comprehensions, dictionaries, sets, and generator expressions. The standard library has two modules (itertools and functools) that implement functional tools borrowed from Haskell and Standard ML. Python's core philosophy is summarized in the Zen of Python (PEP 20) written by Tim Peters, which includes aphorisms such as these: However, Python has received criticism for violating these principles and adding unnecessary language bloat. Responses to these criticisms note that the Zen of Python is a guideline rather than a rule. The addition of some new features had been controversial: Guido van Rossum resigned as Benevolent Dictator for Life after conflict about adding the assignment expression operator in Python 3.8. Nevertheless, rather than building all functionality into its core, Python was designed to be highly extensible via modules. This compact modularity has made it particularly popular as a means of adding programmable interfaces to existing applications. Van Rossum's vision of a small core language with a large standard library and easily extensible interpreter stemmed from his frustrations with ABC, which represented the opposite approach. Python claims to strive for a simpler, less-cluttered syntax and grammar, while giving developers a choice in their coding methodology. Python lacks do .. while loops, which Rossum considered harmful. In contrast to Perl's motto "there is more than one way to do it", Python advocates an approach where "there should be one – and preferably only one – obvious way to do it". In practice, however, Python provides many ways to achieve a given goal. There are at least three ways to format a string literal, with no certainty as to which one a programmer should use. Alex Martelli is a Fellow at the Python Software Foundation and Python book author; he wrote that "To describe something as 'clever' is not considered a compliment in the Python culture." Python's developers typically prioritize readability over performance. For example, they reject patches to non-critical parts of the CPython reference implementation that would offer increases in speed that do not justify the cost of clarity and readability.[failed verification] Execution speed can be improved by moving speed-critical functions to extension modules written in languages such as C, or by using a just-in-time compiler like PyPy. Also, it is possible to transpile to other languages. However, this approach either fails to achieve the expected speed-up, since Python is a very dynamic language, or only a restricted subset of Python is compiled (with potential minor semantic changes). Python is meant to be a fun language to use. This goal is reflected in the name – a tribute to the British comedy group Monty Python – and in playful approaches to some tutorials and reference materials. For instance, some code examples use the terms "spam" and "eggs" (in reference to a Monty Python sketch), rather than the typical terms "foo" and "bar". A common neologism in the Python community is pythonic, which has a broad range of meanings related to program style: Pythonic code may use Python idioms well; be natural or show fluency in the language; or conform with Python's minimalist philosophy and emphasis on readability. Syntax and semantics Python is meant to be an easily readable language. Its formatting is visually uncluttered and often uses English keywords where other languages use punctuation. Unlike many other languages, it does not use curly brackets to delimit blocks, and semicolons after statements are allowed but rarely used. It has fewer syntactic exceptions and special cases than C or Pascal. Python uses whitespace indentation, rather than curly brackets or keywords, to delimit blocks. An increase in indentation comes after certain statements; a decrease in indentation signifies the end of the current block. Thus, the program's visual structure accurately represents its semantic structure. This feature is sometimes termed the off-side rule. Some other languages use indentation this way; but in most, indentation has no semantic meaning. The recommended indent size is four spaces. Python's statements include the following: The assignment statement (=) binds a name as a reference to a separate, dynamically allocated object. Variables may subsequently be rebound at any time to any object. In Python, a variable name is a generic reference holder without a fixed data type; however, it always refers to some object with a type. This is called dynamic typing—in contrast to statically-typed languages, where each variable may contain only a value of a certain type. Python does not support tail call optimization or first-class continuations; according to Van Rossum, the language never will. However, better support for coroutine-like functionality is provided by extending Python's generators. Before 2.5, generators were lazy iterators; data was passed unidirectionally out of the generator. From Python 2.5 on, it is possible to pass data back into a generator function; and from version 3.3, data can be passed through multiple stack levels. Python's expressions include the following: In Python, a distinction between expressions and statements is rigidly enforced, in contrast to languages such as Common Lisp, Scheme, or Ruby. This distinction leads to duplicating some functionality, for example: A statement cannot be part of an expression; because of this restriction, expressions such as list and dict comprehensions (and lambda expressions) cannot contain statements. As a particular case, an assignment statement such as a = 1 cannot be part of the conditional expression of a conditional statement. Python uses duck typing, and it has typed objects but untyped variable names. Type constraints are not checked at definition time; rather, operations on an object may fail at usage time, indicating that the object is not of an appropriate type. Despite being dynamically typed, Python is strongly typed, forbidding operations that are poorly defined (e.g., adding a number and a string) rather than quietly attempting to interpret them. Python allows programmers to define their own types using classes, most often for object-oriented programming. New instances of classes are constructed by calling the class, for example, SpamClass() or EggsClass()); the classes are instances of the metaclass type (which is an instance of itself), thereby allowing metaprogramming and reflection. Before version 3.0, Python had two kinds of classes, both using the same syntax: old-style and new-style. Current Python versions support the semantics of only the new style. Python supports optional type annotations. These annotations are not enforced by the language, but may be used by external tools such as mypy to catch errors. Python includes a module typing including several type names for type annotations. Also, mypy supports a Python compiler called mypyc, which leverages type annotations for optimization. 1.33333 frozenset() Python includes conventional symbols for arithmetic operators (+, -, *, /), the floor-division operator //, and the modulo operator %. (With the modulo operator, a remainder can be negative, e.g., 4 % -3 == -2.) Also, Python offers the ** symbol for exponentiation, e.g. 5**3 == 125 and 9**0.5 == 3.0. Also, it offers the matrix‑multiplication operator @ . These operators work as in traditional mathematics; with the same precedence rules, the infix operators + and - can also be unary, to represent positive and negative numbers respectively. Division between integers produces floating-point results. The behavior of division has changed significantly over time: In Python terms, the / operator represents true division (or simply division), while the // operator represents floor division. Before version 3.0, the / operator represents classic division. Rounding towards negative infinity, though a different method than in most languages, adds consistency to Python. For instance, this rounding implies that the equation (a + b)//b == a//b + 1 is always true. Also, the rounding implies that the equation b*(a//b) + a%b == a is valid for both positive and negative values of a. As expected, the result of a%b lies in the half-open interval [0, b), where b is a positive integer; however, maintaining the validity of the equation requires that the result must lie in the interval (b, 0] when b is negative. Python provides a round function for rounding a float to the nearest integer. For tie-breaking, Python 3 uses the round to even method: round(1.5) and round(2.5) both produce 2. Python versions before 3 used the round-away-from-zero method: round(0.5) is 1.0, and round(-0.5) is −1.0. Python allows Boolean expressions that contain multiple equality relations to be consistent with general usage in mathematics. For example, the expression a < b < c tests whether a is less than b and b is less than c. C-derived languages interpret this expression differently: in C, the expression would first evaluate a < b, resulting in 0 or 1, and that result would then be compared with c. Python uses arbitrary-precision arithmetic for all integer operations. The Decimal type/class in the decimal module provides decimal floating-point numbers to a pre-defined arbitrary precision with several rounding modes. The Fraction class in the fractions module provides arbitrary precision for rational numbers. Due to Python's extensive mathematics library and the third-party library NumPy, the language is frequently used for scientific scripting in tasks such as numerical data processing and manipulation. Functions are created in Python by using the def keyword. A function is defined similarly to how it is called, by first providing the function name and then the required parameters. Here is an example of a function that prints its inputs: To assign a default value to a function parameter in case no actual value is provided at run time, variable-definition syntax can be used inside the function header. Code examples "Hello, World!" program: Program to calculate the factorial of a non-negative integer: Libraries Python's large standard library is commonly cited as one of its greatest strengths. For Internet-facing applications, many standard formats and protocols such as MIME and HTTP are supported. The language includes modules for creating graphical user interfaces, connecting to relational databases, generating pseudorandom numbers, arithmetic with arbitrary-precision decimals, manipulating regular expressions, and unit testing. Some parts of the standard library are covered by specifications—for example, the Web Server Gateway Interface (WSGI) implementation wsgiref follows PEP 333—but most parts are specified by their code, internal documentation, and test suites. However, because most of the standard library is cross-platform Python code, only a few modules must be altered or rewritten for variant implementations. As of 13 March 2025,[update] the Python Package Index (PyPI), the official repository for third-party Python software, contains over 614,339 packages. Development environments Most[which?] Python implementations (including CPython) include a read–eval–print loop (REPL); this permits the environment to function as a command line interpreter, with which users enter statements sequentially and receive results immediately. Also, CPython is bundled with an integrated development environment (IDE) called IDLE, which is oriented toward beginners.[citation needed] Other shells, including IDLE and IPython, add additional capabilities such as improved auto-completion, session-state retention, and syntax highlighting. Standard desktop IDEs include PyCharm, Spyder, and Visual Studio Code; there are web browser-based IDEs, such as the following environments: Implementations CPython is the reference implementation of Python. This implementation is written in C, meeting the C11 standard since version 3.11. Older versions use the C89 standard with several select C99 features, but third-party extensions are not limited to older C versions—e.g., they can be implemented using C11 or C++. CPython compiles Python programs into an intermediate bytecode, which is then executed by a virtual machine. CPython is distributed with a large standard library written in a combination of C and native Python. CPython is available for many platforms, including Windows and most modern Unix-like systems, including macOS (and Apple M1 Macs, since Python 3.9.1, using an experimental installer). Starting with Python 3.9, the Python installer intentionally fails to install on Windows 7 and 8; Windows XP was supported until Python 3.5, with unofficial support for VMS. Platform portability was one of Python's earliest priorities. During development of Python 1 and 2, even OS/2 and Solaris were supported; since that time, support has been dropped for many platforms. All current Python versions (since 3.7) support only operating systems that feature multithreading, by now supporting not nearly as many operating systems (dropping many outdated) than in the past. All alternative implementations have at least slightly different semantics. For example, an alternative may include unordered dictionaries, in contrast to other current Python versions. As another example in the larger Python ecosystem, PyPy does not support the full C Python API. Creating an executable with Python often is done by bundling an entire Python interpreter into the executable, which causes binary sizes to be massive for small programs, yet there exist implementations that are capable of truly compiling Python. Alternative implementations include the following: Stackless Python is a significant fork of CPython that implements microthreads. This implementation uses the call stack differently, thus allowing massively concurrent programs. PyPy also offers a stackless version. Just-in-time Python compilers have been developed, but are now unsupported: There are several compilers/transpilers to high-level object languages; the source language is unrestricted Python, a subset of Python, or a language similar to Python: There are also specialized compilers: Some older projects existed, as well as compilers not designed for use with Python 3.x and related syntax: A performance comparison among various Python implementations, using a non-numerical (combinatorial) workload, was presented at EuroSciPy '13. In addition, Python's performance relative to other programming languages is benchmarked by The Computer Language Benchmarks Game. There are several approaches to optimizing Python performance, despite the inherent slowness of an interpreted language. These approaches include the following strategies or tools: Language Development Python's development is conducted mostly through the Python Enhancement Proposal (PEP) process; this process is the primary mechanism for proposing major new features, collecting community input on issues, and documenting Python design decisions. Python coding style is covered in PEP 8. Outstanding PEPs are reviewed and commented on by the Python community and the steering council. Enhancement of the language corresponds with development of the CPython reference implementation. The mailing list python-dev is the primary forum for the language's development. Specific issues were originally discussed in the Roundup bug tracker hosted by the foundation. In 2022, all issues and discussions were migrated to GitHub. Development originally took place on a self-hosted source-code repository running Mercurial, until Python moved to GitHub in January 2017. CPython's public releases have three types, distinguished by which part of the version number is incremented: Many alpha, beta, and release-candidates are also released as previews and for testing before final releases. Although there is a rough schedule for releases, they are often delayed if the code is not ready yet. Python's development team monitors the state of the code by running a large unit test suite during development. The major academic conference on Python is PyCon. Also, there are special Python mentoring programs, such as PyLadies. Naming Python's name is inspired by the British comedy group Monty Python, whom Python creator Guido van Rossum enjoyed while developing the language. Monty Python references appear frequently in Python code and culture; for example, the metasyntactic variables often used in Python literature are spam and eggs, rather than the traditional foo and bar. Also, the official Python documentation contains various references to Monty Python routines. Python users are sometimes referred to as "Pythonistas". Languages influenced by Python See also Notes References Further reading External links |
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[SOURCE: https://techcrunch.com/2026/02/20/anthropic-funded-group-backs-candidate-attacked-by-rival-ai-super-pac/] | [TOKENS: 511] |
Save up to $680 on your pass with Super Early Bird rates. REGISTER NOW. Save up to $680 on your Disrupt 2026 pass. Ends February 27. REGISTER NOW. Latest AI Amazon Apps Biotech & Health Climate Cloud Computing Commerce Crypto Enterprise EVs Fintech Fundraising Gadgets Gaming Google Government & Policy Hardware Instagram Layoffs Media & Entertainment Meta Microsoft Privacy Robotics Security Social Space Startups TikTok Transportation Venture Staff Events Startup Battlefield StrictlyVC Newsletters Podcasts Videos Partner Content TechCrunch Brand Studio Crunchboard Contact Us Posted: Anthropic-funded group backs candidate attacked by rival AI super PAC Late last year, New York Assembly member Alex Bores became the target of a campaign by a pro-AI super PAC to thwart his congressional bid. The group, Leading the Future, is armed with more than $100 million from backers including Andreessen Horowitz, OpenAI President Greg Brockman, AI search startup Perplexity, and Palantir co-founder Joe Lonsdale. Bores’ response was simple: bring it on. Now, he’s got the muscle to back that challenge up. Public First Action, a PAC backed by a $20 million donation from Anthropic, is spending $450,000 to boost Bores in the race for New York’s 12th congressional district, reports Bloomberg. Like its rival, the committee is pro-AI, but it’s pitching a different vision, one centered on transparency, safety standards, and public oversight. Meanwhile, the industry-backed PAC, Leading the Future, has already poured $1.1 million into ads attacking Bores, largely because he sponsored New York’s RAISE Act, which requires major AI developers to disclose safety protocols and report serious misuse of their systems. Topics Save up to $680 on your pass before February 27.Meet investors. Discover your next portfolio company. Hear from 250+ tech leaders, dive into 200+ sessions, and explore 300+ startups building what’s next. Don’t miss these one-time savings. Subscribe for the industry’s biggest tech news Every weekday and Sunday, you can get the best of TechCrunch’s coverage. TechCrunch Mobility is your destination for transportation news and insight. Startups are the core of TechCrunch, so get our best coverage delivered weekly. Provides movers and shakers with the info they need to start their day. By submitting your email, you agree to our Terms and Privacy Notice. Related Latest in Government & Policy © 2025 TechCrunch Media LLC. |
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[SOURCE: https://en.wikipedia.org/wiki/New_Testament] | [TOKENS: 12160] |
Contents New Testament The New Testament[a] (NT) is the second division of the Christian biblical canon. It discusses the teachings and person of Jesus, as well as events relating to first-century Christianity. The New Testament's background, the first division of the Christian Bible, has the name of Old Testament, which is based primarily upon the Hebrew Bible; together they are regarded as Sacred Scripture by Christians. The New Testament is a collection of 27 Christian texts written in Koine Greek by various authors, forming the second major division of the Christian Bible. It includes four gospels, the Acts of the Apostles, epistles attributed to Paul and other authors, and the Book of Revelation. The New Testament canon developed gradually over the first few centuries of Christianity through a complex process of debate, rejection of heretical texts, and recognition of writings deemed apostolic, culminating in the formalization of the 27-book canon by the late 4th century. It has been widely accepted across Christian traditions since Late Antiquity. Literary analysis suggests many of its texts were written in the mid-to-late first century. There is no scholarly consensus on the date of composition of the latest New Testament text. The earliest surviving New Testament manuscripts date from the late second to early third centuries AD, with the possible exception of Papyrus 52. The New Testament was transmitted through thousands of manuscripts in various languages and church quotations and contains variants. Textual criticism uses surviving manuscripts to reconstruct the oldest version feasible and to chart the history of the written tradition. It has varied reception among Christians today. It is viewed as a holy scripture alongside Sacred Tradition among Catholics and Orthodox, while evangelicals and some other Protestants view it as the inspired word of God without tradition. Etymology The word testament in the expression "New Testament" refers to a Christian new covenant that Christians believe completes or fulfils the Mosaic covenant (the Jewish covenant) that Yahweh (the God of Israel) made with the people of Israel on Mount Sinai through Moses, described in the books of the Old Testament of the Christian Bible. While Christianity traditionally even claims this Christian new covenant as being prophesied in the Jewish Bible's Book of Jeremiah, Judaism traditionally disagrees: Behold, the days come, saith the LORD, that I will make a new covenant with the house of Israel, and with the house of Judah; not according to the covenant that I made with their fathers in the day that I took them by the hand to bring them out of the land of Egypt; forasmuch as they broke My covenant, although I was a lord over them, saith the LORD. But this is the covenant that I will make with the house of Israel after those days, saith the LORD, I will put My law in their inward parts, and in their heart will I write it; and I will be their God, and they shall be My people; and they shall teach no more every man his neighbour, and every man his brother, saying: 'Know the LORD'; for they shall all know Me, from the least of them unto the greatest of them, saith the LORD; for I will forgive their iniquity, and their sin will I remember no more. The word covenant means 'agreement' (from Latin con-venio "to agree", literally 'to come together'): the use of the word testament, which describes the different idea of written instructions for inheritance after death, to refer to the covenant with Israel in the Old Testament, is foreign to the original Hebrew word brit (בְּרִית) describing it, which only means 'alliance, covenant, pact' and never 'inheritance instructions after death'. This use comes from the transcription of Latin testamentum 'will (left after death)', a literal translation of Greek diatheke (διαθήκη) 'will (left after death)', which is the word used to translate Hebrew brit in the Septuagint. The choice of this word diatheke, by the Jewish translators of the Septuagint in Alexandria in the 3rd and 2nd century BC, has been understood in Christian theology to imply a reinterpreted view of the Old Testament covenant with Israel as possessing characteristics of a 'will left after death' (the death of Jesus) and has generated considerable attention from biblical scholars and theologians: in contrast to the Jewish usage where brit was the usual Hebrew word used to refer to pacts, alliances and covenants in general, like a common pact between two individuals,[b] and to the one between God and Israel in particular,[c] in the Greek world diatheke was virtually never used to refer to an alliance or covenant (one exception is noted in a passage from Aristophanes) and referred instead to a will left after the death of a person. There is scholarly debate as to the reason why the translators of the Septuagint chose the term diatheke to translate Hebrew brit, instead of another Greek word generally used to refer to an alliance or covenant. The use of the phrase New Testament (Koine Greek: Ἡ Καινὴ Διαθήκη, Hē Kainḕ Diathḗkē) to describe a collection of first- and second-century Christian Greek scriptures can be traced back to Tertullian in his work Against Praxeas. Irenaeus uses the phrase New Testament several times, but does not use it in reference to any written text. In Against Marcion, written c. 208 AD, Tertullian writes of: the Divine Word, who is doubly edged with the two testaments of the law and the gospel. And Tertullian continues later in the book, writing:[d] it is certain that the whole aim at which he [Marcion] has strenuously laboured, even in the drawing up of his Antitheses, centres in this, that he may establish a diversity between the Old and the New Testaments, so that his own Christ may be separate from the Creator, as belonging to this rival God, and as alien from the law and the prophets. By the 4th century, the existence—even if not the exact contents—of both an Old and New Testament had been established. Lactantius, a 3rd–4th century Christian author wrote in his early-4th-century Latin Institutiones Divinae (Divine Institutes): But all scripture is divided into two Testaments. That which preceded the advent and passion of Christ—that is, the law and the prophets—is called the Old; but those things which were written after His resurrection are named the New Testament. The Jews make use of the Old, we of the New: but yet they are not discordant, for the New is the fulfilling of the Old, and in both there is the same testator, even Christ, who, having suffered death for us, made us heirs of His everlasting kingdom, the people of the Jews being deprived and disinherited. As the prophet Jeremiah testifies when he speaks such things: "Behold, the days come, saith the Lord, that I will make a new testament to the house of Israel and the house of Judah, not according to the testament which I made to their fathers, in the day that I took them by the hand to bring them out of the land of Egypt; for they continued not in my testament, and I disregarded them, saith the Lord." ... For that which He said above, that He would make a new testament to the house of Judah, shows that the old testament which was given by Moses was not perfect; but that which was to be given by Christ would be complete. Eusebius describes the collection of Christian writings as "covenanted" (ἐνδιαθήκη) books in Hist. Eccl. 3.3.1–7; 3.25.3; 5.8.1; 6.25.1. Books Each of the four gospels in the New Testament narrates the life, death, and resurrection of Jesus of Nazareth (the gospel of Mark in the original text ends with the empty tomb and has no account of the post-resurrection appearances, but the emptiness of the tomb implies a resurrection). The word "gospel" derives from the Old English gōd-spell (rarely godspel), meaning "good news" or "glad tidings"; its Greek and Hebrew equivalents are euangélion (εὐαγγέλιον) and besorah (בְּשׂוֹרָה), respectively. The gospel was considered the "good news" of the coming Kingdom of God's own Messiah, and the redemption through the life and death of Jesus, the central Christian message. Starting in the late second century, the four narrative accounts of the life and work of Jesus Christ have been referred to as "The Gospel of …" or "The Gospel according to …" followed by the name of the supposed author. The first author to explicitly name the canonical gospels is Irenaeus of Lyon, who promoted the four canonical gospels in his book Against Heresies, written around 180. These four gospels that were eventually included in the New Testament were only a few among many other early Christian gospel traditions; the existence of such traditions, both written and oral, is even mentioned at the beginning of the Gospel of Luke. Various non-canonical gospels, such as the so-called "Jewish-Christian Gospels" and the Gospel of Thomas, were also written after the canonical gospels became widely known and used among early Christian communities, advocating for differing theological views, in particular Gnostic ones. In modern scholarship, the Synoptic Gospels are the primary sources for reconstructing Jesus Christ's ministry.[note 1] The Acts of the Apostles is a narrative of the apostles' ministry and activity after Jesus Christ's death and resurrection, from which point it resumes and functions as a sequel to the Gospel of Luke. Examining style, phraseology, and other evidence, modern scholarship generally concludes that Acts and the Gospel of Luke share the same author, referred to as Luke–Acts. Luke–Acts does not name its author. Church tradition identified him as Luke the Evangelist, the companion of Paul, but critical views at the end of the 20th century were evenly divided about whether Luke the physician wrote it due to the many differences between Acts and the authentic Pauline letters, though most scholars still believe the author, whether named Luke or not, met Paul. The most probable date of composition is around 80–90 AD, although some scholars date it significantly later, The earliest witnesses for Luke fall into the Western and the Alexandrian text-types and the dominant view is that the Western text represents a process of deliberate revision in the second century, as the variations seem to form specific patterns. The Pauline letters are the thirteen New Testament books that present Paul the Apostle as their author.[e] Paul's authorship of six of the letters is disputed. Four are thought by most modern scholars to be pseudepigraphic, i.e., not actually written by Paul even if attributed to him within the letters themselves. Opinion is more divided on the other two disputed letters (2 Thessalonians and Colossians). These letters were written to Christian communities in specific cities or geographical regions, often to address issues faced by that particular community. Prominent themes include the relationship both to broader "pagan" society, to Judaism, and to other Christians. [Disputed letters are marked with an asterisk (*).] The last four Pauline letters in the New Testament are addressed to individual persons. They include the following: [Disputed letters are marked with an asterisk (*).] All of the above except for Philemon are known as the Pastoral epistles. They are addressed to individuals charged with pastoral oversight of churches and discuss issues of Christian living, doctrine and leadership. They often address different concerns to those of the preceding epistles. These letters are believed by many to be pseudepigraphic. Some scholars (e.g., Bill Mounce, Ben Witherington, R.C. Sproul) will argue that the letters are genuinely Pauline, or at least written under Paul's supervision. The Epistle to the Hebrews addresses a Jewish audience who had come to believe that Jesus was the Anointed One (Hebrew: מָשִׁיחַ—transliterated in English as "Moshiach", or "Messiah"; Greek: Χριστός—transliterated in English as "Christos", for "Christ") who was predicted in the writings of the Hebrew Scriptures. The author discusses the superiority of the new covenant and the ministry of Jesus, to the Mosaic Law Covenant and urges the readers in the practical implications of this conviction through the end of the epistle. The book has been widely accepted by the Christian church as inspired by God and thus authoritative, despite the acknowledgment of uncertainties about who its human author was. Regarding authorship, although the Epistle to the Hebrews does not internally claim to have been written by the Apostle Paul, some similarities in wordings to some of the Pauline Epistles have been noted and inferred. In antiquity, some began to ascribe it to Paul in an attempt to provide the anonymous work an explicit apostolic pedigree. In the 4th century, Jerome and Augustine of Hippo supported Paul's authorship. The Church largely agreed to include Hebrews as the fourteenth letter of Paul, and affirmed this authorship until the Reformation. The letter to the Hebrews had difficulty in being accepted as part of the Christian canon because of its anonymity. As early as the 3rd century, Origen wrote of the letter, "Men of old have handed it down as Paul's, but who wrote the Epistle God only knows." Contemporary scholars often reject Pauline authorship for the epistle to the Hebrews, based on its distinctive style and theology, which are considered to set it apart from Paul's writings. The Catholic epistles (or "General epistles") consist of both letters and treatises in the form of letters written to the church at large. The term "catholic" (Greek: καθολική, katholikē), used to describe these letters in the oldest manuscripts containing them, here simply means "general" or "universal" and does not refer to their canonical status among Christian traditions. The authorship of a number of these is disputed. The final book of the New Testament is the Book of Revelation, also known as the Apocalypse of John. In the New Testament canon, it is considered prophetical or apocalyptic literature. Its authorship has been attributed either to John the Apostle (in which case it is often thought that John the Apostle is John the Evangelist, i.e. author of the Gospel of John) or to another John designated "John of Patmos" after the island where the text says the revelation was received (1:9). Some ascribe the writership date as c. 81–96 AD, and others at around 68 AD. The work opens with letters to seven local congregations of Asia Minor (now part of Türkiye) and thereafter takes the form of an apocalypse (Greek: ἀποκάλυψις, apokálypsis), a "revealing" of divine prophecy and mysteries, a literary genre popular in ancient Judaism and Christianity. Book order The order in which the books of the New Testament appear differs between some collections and ecclesiastical traditions. In the Latin West, prior to the Vulgate (an early 5th-century Latin version of the Bible), the four Gospels were arranged in the following order: Matthew, John, Luke, and Mark.[f] The Syriac Peshitta places the major Catholic epistles (James, 1 Peter, and 1 John) immediately after Acts and before the Pauline epistles. The order of an early edition of the letters of Paul is based on the size of the letters: longest to shortest, though keeping 1 and 2 Corinthians and 1 and 2 Thessalonians together. The Pastoral epistles were apparently not part of the Corpus Paulinum in which this order originated and were later inserted after 2 Thessalonians and before Philemon. Hebrews was variously incorporated into the Corpus Paulinum either after 2 Thessalonians, after Philemon (i.e. at the very end), or after Romans. Luther's canon, found in the 16th-century Luther Bible, continues to place Hebrews, James, Jude, and the Apocalypse (Revelation) last. This reflects the thoughts of the Reformer Martin Luther on the canonicity of these books.[g] Authors It is considered the books of the New Testament were all or nearly all written by Jewish Christians—that is, Jewish disciples of Christ, who lived in the Roman Empire, and under Roman occupation. The author of the Gospel of Luke and the Book of Acts is frequently thought of as an exception; scholars are divided as to whether he was a Gentile or a Hellenistic Jew. A few scholars identify the author of the Gospel of Mark as probably a Gentile, and similarly for the Gospel of Matthew, though most assert Jewish-Christian authorship.[verification needed] However, more recently the above understanding has been challenged by the publication of evidence showing only educated elites after the Jewish War would have been capable of producing the prose found in the Gospels.[verification needed][page needed] Authorship of the Gospels remains divided among both evangelical and critical scholars. The names of each Gospel stems from church tradition. The gospels are anonymous, as was common for bios of the time; biographies by Plutarch and Suetonius were also originally anonymous as well. The Gospel of John claims to be based on eyewitness testimony from the Disciple whom Jesus loved, but never names this character. The author of Luke-Acts claimed to be a companion of Paul; this claim remains accepted by most scholars.[h] Objections to this viewpoint mainly take the form of the following two interpretations, but also include the claim that Luke-Acts contains differences in theology and historical narrative which are irreconcilable with the authentic letters of Paul the Apostle. Ehrman has argued for a scholarly consensus that many New Testament books were not written by the individuals whose names are attached to them. Scholarly opinion is that names were fixed to the gospels by the mid second century AD. Many scholars believe that none of the gospels were written in the region of Palestine. Most scholars hold to Marcan priority, which posits that Mark was the first gospel to be written. Many argue the authors of the Gospel of Matthew and the Gospel of Luke used the Gospel of Mark and a hypothetical Q source, though alternative hypotheses that posit the direct use of Matthew by Luke or vice versa without Q are increasing in popularity within scholarship. These three gospels are called the Synoptic Gospels, because they include many of the same stories, often in the same sequence, and sometimes in exactly the same wording. Scholars agree that the Gospel of John was written last, by using a different tradition and body of testimony. In addition, most scholars agree that the author of Luke also wrote the Acts of the Apostles. Scholars hold that these books constituted two-halves of a single work, Luke–Acts.[citation needed] The same author appears to have written the Gospel of Luke and the Acts of the Apostles, and most refer to them as the Lucan texts. The most direct evidence comes from the prefaces of each book; both were addressed to Theophilus, and the preface to the Acts of the Apostles references "my former book" about the ministry of Jesus. Furthermore, there are linguistic and theological similarities between the two works, suggesting that they have a common author. The Pauline epistles are the thirteen books in the New Testament traditionally attributed to Paul of Tarsus. Seven letters are generally classified as "undisputed", expressing contemporary scholarly near consensus that they are the work of Paul: Romans, 1 Corinthians, 2 Corinthians, Galatians, Philippians, 1 Thessalonians and Philemon. Six additional letters bearing Paul's name do not currently enjoy the same academic consensus: Ephesians, Colossians, 2 Thessalonians, 1 Timothy, 2 Timothy and Titus.[i] The anonymous Epistle to the Hebrews is, despite unlikely Pauline authorship, often functionally grouped with these thirteen to form a corpus of fourteen "Pauline" epistles.[j] While many scholars uphold the traditional view, some question whether the first three, called the "Deutero-Pauline Epistles", are authentic letters of Paul. As for the latter three, the "Pastoral epistles", some scholars uphold the traditional view of these as the genuine writings of the Apostle Paul;[i] most regard them as pseudepigrapha. One might refer to the Epistle to the Laodiceans and the Third Epistle to the Corinthians as examples of works identified as pseudonymous. Since the early centuries of the church, there has been debate concerning the authorship of the anonymous Epistle to the Hebrews, and contemporary scholars generally reject Pauline authorship. The epistles all share common themes, emphasis, vocabulary and style; they exhibit a uniformity of doctrine concerning the Mosaic Law, Jesus, faith, and various other issues. All of these letters easily fit into the chronology of Paul's journeys depicted in Acts of the Apostles. The author of the Epistle of James identifies himself in the opening verse as "James, a servant of God and of the Lord Jesus Christ". From the middle of the 3rd century, patristic authors cited the Epistle as written by James the Just. Ancient and modern scholars have always been divided on the issue of authorship. Many consider the epistle to be written in the late 1st or early 2nd centuries. The author of the First Epistle of Peter identifies himself in the opening verse as "Peter, an apostle of Jesus Christ", and the view that the epistle was written by St. Peter is attested to by a number of Church Fathers: Irenaeus (140–203), Tertullian (150–222), Clement of Alexandria (155–215) and Origen of Alexandria (185–253). Unlike The Second Epistle of Peter, the authorship of which was debated in antiquity, there was little debate about Peter's authorship of this first epistle until the 18th century. Although 2 Peter internally purports to be a work of the apostle, many biblical scholars have concluded that Peter is not the author. For an early date and (usually) for a defense of the Apostle Peter's authorship see Kruger, Zahn, Spitta,[full citation needed] Bigg, and Green. The Epistle of Jude title is written as follows: "Jude, a servant of Jesus Christ and brother of James". The debate has continued over the author's identity as the apostle, the brother of Jesus, both, or neither. The Gospel of John, the three Johannine epistles, and the Book of Revelation, exhibit marked similarities, although more so between the gospel and the epistles (especially the gospel and 1 John) than between those and Revelation. Most scholars therefore treat the five as a single corpus of Johannine literature, albeit not from the same author. Christian tradition identifies John the Apostle with John the Evangelist, the supposed author of the Gospel of John. The majority of scholars interpret John 21:24 as claiming the beloved disciple was the author of the gospel, though others interpret it to mean he was source of its traditions.[k] The passage is often viewed as a later addition by either the author of chapters 1-20 or by another redactor, though a growing number views it as part of the earliest text. The author may also claim to be a witness in 1:14 and 19:35. 20th century scholarship viewed John as a communal work written in stages, but recent scholarship tends to view the gospel as the product of a single author and are less interested in theories about hypothetical editions or sources of the gospel. Christian tradition identifies this disciple as the apostle John, but while this idea still has supporters, for a variety of reasons the majority of modern scholars have abandoned it or hold it only tenuously. John’s usage of Mark is well in line with the rewriting methods used by Jewish authors, and the patterns of variation in the gospels are typical of ancient biographies about actual people and history. The author of the Book of Revelation identifies himself several times as "John". and states that he was on Patmos when he received his first vision. As a result, the author is sometimes referred to as John of Patmos. The author has traditionally been identified with John the Apostle to whom the Gospel and the epistles of John were attributed. It was believed that he was exiled to the island of Patmos during the reign of the Roman emperor Domitian, and there wrote Revelation. Justin Martyr (c. 100–165 AD) who was acquainted with Polycarp, who had been mentored by John, makes a possible allusion to this book, and credits John as the source. Irenaeus (c. 115–202) assumes it as a conceded point. According to the Zondervan Pictorial Encyclopedia of the Bible, modern scholars are divided between the apostolic view and several alternative hypotheses put forth in the last hundred years or so. Ben Witherington points out that linguistic evidence makes it unlikely that the books were written by the same person. Dating the New Testament There is no scholarly consensus on the date of composition of the latest New Testament texts. John A. T. Robinson, Dan Wallace, William F. Albright, Maurice Casey, and James Crossley all dated many or all of the books of the New Testament before 70 AD. Jonathan Bernier's recent argument for early dates has enjoyed a positive reception, with endorsements from Chris Keith and Anders Runesson, among others. Many other scholars, such as Bart D. Ehrman and Stephen L. Harris, date some New Testament texts much later than this; Richard Pervo dated Luke–Acts to c. 115 AD, and David Trobisch places Acts in the mid-to-late second century, contemporaneous with the publication of the first New Testament canon. Whether the Gospels were composed before or after 70 AD, according to Bas van Os, the lifetime of various eyewitnesses that includes Jesus's own family through the end of the First Century is very likely statistically. Markus Bockmuehl finds this structure of lifetime memory in various early Christian traditions. The earliest manuscripts of New Testament books date from the late second to early third centuries (although see Papyrus 52 for a possible exception). Literary analysis of the New Testament texts themselves can be used to date many of the books of the New Testament to the mid-to-late first century. The earliest works of the New Testament are the letters of the Apostle Paul. It can be determined that 1 Thessalonians is likely the earliest of these letters, written around 52 AD. Language The major languages spoken by both Jews and Greeks in the Holy Land at the time of Jesus were Aramaic and Koine Greek, and also a colloquial dialect of Mishnaic Hebrew. It is generally agreed that the historical Jesus primarily spoke Aramaic, perhaps also some Hebrew and Greek. The books that would form the New Testament were written in the Koine Greek language. As Christianity spread, these books were translated into other languages such as Latin, Syriac, and Coptic. Some of the Church Fathers imply or claim that Matthew was originally written in Hebrew or Aramaic, and then soon after was written in Koine Greek. Scholars have proposed various explanations for this assertion given that Matthew was written in Greek and is not a translation: one theory is that Matthew himself produced a Semitic work and secondly Greek recension; Josephus also claimed to write a translation of an Aramaic version of The Jewish War, though both the extant Gospel of Matthew and the War are not translations. Another is that others translated Matthew into Greek rather freely. Another is that Papias simply means "Ἑβραΐδι διαλέκτῳ" as a Hebrew style of Greek. The style of Koine Greek in which the New Testament is written differs from the general Koine Greek used by Greek writers of the same era, a difference that some scholars have explained by the fact that the authors of the New Testament, nearly all Jews and deeply familiar with the Septuagint, wrote in a Jewish-Greek dialect strongly influenced by Aramaic and Hebrew (see Jewish Koine Greek, related to the Greek of the Septuagint). But other scholars say that this view is arrived at by comparing the linguistic style of the New Testament to the preserved writings of the literary men of the era, who imitated the style of the great Attic texts and as a result did not reflect the everyday spoken language, so that this difference in style could be explained by the New Testament being written, unlike other preserved literary material of the era, in the Koine Greek spoken in everyday life, in order to appeal to the common people, a style which has also been found in contemporary non-Jewish texts such as private letters, receipts and petitions discovered in Egypt (where the dry air has preserved these documents which, as everyday material not deemed of literary importance, had not been copied by subsequent generations). Development of the New Testament canon The process of canonization of the New Testament was complex and lengthy. In the initial centuries of early Christianity, there were many books widely considered by the church to be inspired, but there was no single formally recognized New Testament canon. The process was characterized by a compilation of books that apostolic tradition considered authoritative in worship and teaching, relevant to the historical situations in which they lived, and consonant with the Old Testament. Writings attributed to the apostles circulated among the earliest Christian communities and the Pauline epistles were circulating, perhaps in collected forms, by the end of the 1st century AD. One of the earliest attempts at solidifying a canon was made by Marcion, c. 140 AD, who accepted only a modified version of Luke (the Gospel of Marcion) and ten of Paul's letters, while rejecting the Old Testament entirely. His canon was largely rejected by other groups of Christians, notably the proto-orthodox Christians, as was his theology, Marcionism. Adolf von Harnack, John Knox, and David Trobisch, among other scholars, have argued that the church formulated its New Testament canon partially in response to the challenge posed by Marcion. Polycarp, Irenaeus and Tertullian held the epistles of Paul to be divinely inspired "scripture". Other books were held in high esteem but were gradually relegated to the status of New Testament apocrypha. Justin Martyr, in the mid 2nd century, mentions "memoirs of the apostles" as being read on Sunday alongside the "writings of the prophets". The Muratorian fragment, dated at between 170 and as late as the end of the 4th century (according to the Anchor Bible Dictionary), may be the earliest known New Testament canon attributed to mainstream Christianity. It is similar, but not identical, to the modern New Testament canon. The oldest clear endorsement of Matthew, Mark, Luke, and John being the only legitimate gospels was written c. 180 AD. A four gospel canon (the Tetramorph) was asserted by Irenaeus, who refers to it directly in his polemic Against Heresies: It is not possible that the gospels can be either more or fewer in number than they are. For, since there are four zones of the world in which we live, and four principal winds, while the church is scattered throughout all the world, and the "pillar and ground" of the church is the gospel and the spirit of life; it is fitting that she should have four pillars, breathing out immortality on every side, and vivifying men afresh. — Irenaeus of Lyon (emphasis added) The books considered to be authoritative by Irenaeus included the four gospels and many of the letters of Paul, although, based on the arguments Irenaeus made in support of only four authentic gospels, some interpreters deduce that the fourfold Gospel must have still been a novelty in Irenaeus's time. By the early 200s, Origen may have been using the same twenty-seven books as in the Catholic New Testament canon, though there were still disputes over the canonicity of the Letter to the Hebrews, Epistle of James, II Peter, II John and III John and the Book of Revelation, known as the Antilegomena. Likewise, the Muratorian fragment is evidence that, perhaps as early as 200, there existed a set of Christian writings somewhat similar to the twenty-seven book NT canon, which included four gospels and argued against objections to them. Thus, while there was a good measure of debate in the Early Church over the New Testament canon, the major writings are claimed to have been accepted by almost all Christians by the middle of the 3rd century. Origen was largely responsible for the collection of usage information regarding the texts that became the New Testament. The information used to create the late-4th-century Easter Letter, which declared accepted Christian writings, was probably based on the Ecclesiastical History (HE) of Eusebius of Caesarea, wherein he uses the information passed on to him by Origen to create both his list at HE 3:25 and Origen's list at HE 6:25. Eusebius got his information about what texts were then accepted and what were then disputed, by the third-century churches throughout the known world, a great deal of which Origen knew of firsthand from his extensive travels, from the library and writings of Origen. In fact, Origen would have possibly included in his list of "inspired writings" other texts kept out by the likes of Eusebius—including the Epistle of Barnabas, Shepherd of Hermas, and 1 Clement. Notwithstanding these facts, "Origen is not the originator of the idea of biblical canon, but he certainly gives the philosophical and literary-interpretative underpinnings for the whole notion." Eusebius, c. 300, gave a detailed list of New Testament writings in his Ecclesiastical History Book 3, Chapter XXV: The Book of Revelation is counted as both accepted (Kirsopp Lake translation: "recognized") and disputed, which has caused some confusion over what exactly Eusebius meant by doing so. From other writings of the church fathers, it was disputed with several canon lists rejecting its canonicity. EH 3.3.5 adds further detail on Paul: "Paul's fourteen epistles are well known and undisputed. It is not indeed right to overlook the fact that some have rejected the Epistle to the Hebrews, saying that it is disputed by the church of Rome, on the ground that it was not written by Paul." EH 4.29.6 mentions the Diatessaron: "But their original founder, Tatian, formed a certain combination and collection of the gospels, I know not how, to which he gave the title Diatessaron, and which is still in the hands of some. But they say that he ventured to paraphrase certain words of the apostle Paul, in order to improve their style." In his Easter letter of 367, Athanasius, Bishop of Alexandria, gave a list of the books that would become the twenty-seven-book NT canon, and he used the word "canonized" (kanonizomena) in regards to them. The first council that accepted the present canon of the New Testament may have been the Synod of Hippo Regius in North Africa (393 AD). The acts of this council are lost. A brief summary of the acts was read at and accepted by the Council of Carthage (397) and the Council of Carthage (419). These councils were under the authority of St. Augustine, who regarded the canon as already closed. Pope Damasus I's Council of Rome in 382, if the Decretum Gelasianum is correctly associated with it, issued a biblical canon identical to that mentioned above, or, if not, the list is at least a 6th-century compilation. Likewise, Damasus' commissioning of the Latin Vulgate edition of the Bible, c. 383, was instrumental in the fixation of the canon in the West. In c. 405, Pope Innocent I sent a list of the sacred books to a Gallic bishop, Exsuperius of Toulouse. Christian scholars assert that, when these bishops and councils spoke on the matter, they were not defining something new but instead "were ratifying what had already become the mind of the Church." The New Testament canon as it is now was first listed by St. Athanasius, Bishop of Alexandria, in 367, in a letter written to his churches in Egypt, Festal Letter 39. Also cited is the Council of Rome, but not without controversy. That canon gained wider and wider recognition until it was accepted at the Third Council of Carthage in 397 and 419. The Book of Revelation was not added till the Council of Carthage (419). Thus, some claim that, from the 4th century, there existed unanimity in the West concerning the New Testament canon (as it is today), and that, by the 5th century, the Eastern Church, with a few exceptions, had come to accept the Book of Revelation and thus had come into harmony on the matter of the canon. Nonetheless, full dogmatic articulations of the canon were not made until the Canon of Trent of 1546 for Roman Catholicism, the Thirty-Nine Articles of 1563 for the Church of England, the Westminster Confession of Faith of 1647 for Calvinism, and the Synod of Jerusalem of 1672 for the Greek Orthodox. On the question of NT Canon formation generally, New Testament scholar Lee Martin McDonald has written that: Although a number of Christians have thought that church councils determined what books were to be included in the biblical canons, a more accurate reflection of the matter is that the councils recognized or acknowledged those books that had already obtained prominence from usage among the various early Christian communities. According to the Catholic Encyclopedia article on the Canon of the New Testament: "The idea of a complete and clear-cut canon of the New Testament existing from the beginning, that is from Apostolic times, has no foundation in history. The Canon of the New Testament, like that of the Old, is the result of a development, of a process at once stimulated by disputes with doubters, both within and without the Church, and retarded by certain obscurities and natural hesitations, and which did not reach its final term until the dogmatic definition of the Tridentine Council." In 331, Constantine I commissioned Eusebius to deliver fifty Bibles for the Church of Constantinople. Athanasius (Apol. Const. 4) recorded Alexandrian scribes around 340 preparing Bibles for Constans. Little else is known, though there is plenty of speculation. For example, it is speculated that this may have provided motivation for canon lists, and that Codex Vaticanus and Codex Sinaiticus may be examples of these Bibles. Together with the Peshitta and Codex Alexandrinus, these are the earliest extant Christian Bibles. Early manuscripts Like other literature from antiquity, the text of the New Testament was (prior to the advent of the printing press) preserved and transmitted in manuscripts. Manuscripts containing at least a part of the New Testament number in the thousands. The earliest of these (like manuscripts containing other literature) are often very fragmentarily preserved. Some of these fragments have even been thought to date as early as the 2nd century (i.e., Papyrus 90, Papyrus 98, Papyrus 104, and famously Rylands Library Papyrus P52, though the early date of the latter has recently been called into question). Textual variation Textual criticism deals with the identification and removal of transcription errors in the texts of manuscripts. Ancient scribes made errors or alterations (such as including non-authentic additions). The New Testament has been preserved in more than 5,800 Greek manuscripts, 10,000 Latin manuscripts and 9,300 manuscripts in various other ancient languages including Syriac, Slavic, Ethiopic and Armenian. Even if the original Greek versions were lost, the entire New Testament could still be assembled from the translations. In addition, there are so many quotes from the New Testament in early church documents and commentaries that the entire New Testament could also be assembled from these alone. Not all biblical manuscripts come from orthodox Christian writers. For example, the Gnostic writings of Valentinus come from the 2nd century AD, and these Christians were regarded as heretics by the mainstream church. The sheer number of witnesses presents unique difficulties, but it also gives scholars a better idea of how close modern Bibles are to the original versions. On noting the large number of surviving ancient manuscripts, Bruce Metzger sums up the view on the issue by saying "The more often you have copies that agree with each other, especially if they emerge from different geographical areas, the more you can cross-check them to figure out what the original document was like. The only way they'd agree would be where they went back genealogically in a family tree that represents the descent of the manuscripts. In attempting to determine the original text of the New Testament books, some modern textual critics have identified sections as additions of material, centuries after the gospel was written. These are called interpolations. In modern translations of the Bible, the results of textual criticism have led to certain verses, words and phrases being left out or marked as not original. According to Bart D. Ehrman, "These scribal additions are often found in late medieval manuscripts of the New Testament, but not in the manuscripts of the earlier centuries." Most modern Bibles have footnotes to indicate passages that have disputed source documents. Bible commentaries also discuss these, sometimes in great detail. While many variations have been discovered between early copies of biblical texts, almost all have no importance, as they are variations in spelling, punctuation, or grammar. Also, many of these variants are so particular to the Greek language that they would not appear in translations into other languages. For example, order of words (i.e. "man bites dog" versus "dog bites man") often does not matter in Greek, so textual variants that flip the order of words often have no consequences. Outside of these unimportant variants, there are a couple variants of some importance. The two most commonly cited examples are the last verses of the Gospel of Mark and the story of Jesus and the woman taken in adultery in the Gospel of John. Many scholars and critics also believe that the Johannine Comma reference supporting the Trinity doctrine in the First Epistle of John to have been a later addition. According to Norman Geisler and William Nix, "The New Testament, then, has not only survived in more manuscripts than any other book from antiquity, but it has survived in a purer form than any other great book—a form that is 99.5% pure". The often referred to Interpreter's Dictionary of the Bible, a book written to prove the validity of the New Testament, says: "A study of 150 Greek [manuscripts] of the Gospel of Luke has revealed more than 30,000 different readings... It is safe to say that there is not one sentence in the New Testament in which the [manuscript] is wholly uniform." Biblical criticism is the scholarly "study and investigation of biblical writings that seeks to make discerning judgments about these writings." The textual variation among manuscript copies of books in the New Testament prompted attempts to discern the earliest form of text already in antiquity (e.g., by the 3rd-century Christian author Origen). The efforts began in earnest again during the Renaissance, which saw a revival of the study of ancient Greek texts. During this period, modern textual criticism was born. In this context, Christian humanists such as Lorenzo Valla and Erasmus promoted a return to the original Greek of the New Testament. This was the beginning of modern New Testament textual criticism, which over subsequent centuries would increasingly incorporate more and more manuscripts, in more languages (i.e., versions of the New Testament), as well as citations of the New Testament by ancient authors and the New Testament text in lectionaries in order to reconstruct the earliest recoverable form of the New Testament text and the history of changes to it. Relationship to earlier and contemporaneous literature Books that later formed the New Testament, like other Christian literature of the period, originated in a literary context that reveals relationships not only to other Christian writings, but also to Graeco-Roman and Jewish works. Of singular importance is the extensive use of and interaction with the Jewish Bible and what would become the Christian Old Testament. Both implicit and explicit citations, as well as countless allusions, appear throughout the books of the New Testament, from the Gospels and Acts, to the Epistles, to the Apocalypse. Early versions The first translations (usually called "versions") of the New Testament were made beginning already at the end of 2nd century. The earliest versions of the New Testament are the translations into the Syriac, Latin, and Coptic languages. The Philoxenian probably was produced in 508 for Bishop Philoxenus of Mabbug. There are several dialects of the Coptic language: Bohairic (the Nile Delta), Fayyumic (in the Faiyum in Middle Egypt), Sahidic (in Upper Egypt), Akhmimic (what is now Sohag Governorate in Upper Egypt), and others. The first translation was made by at least the third century into the Sahidic dialect (copsa). This translation represents a mixed text, mostly Alexandrian, though also with Western readings. A Bohairic translation was made later, but existed already in the 4th century. Though the translation makes less use of Greek words than the Sahidic, it does employ some Greek grammar (e.g., in word-order and the use of particles such as the syntactic construction μεν—δε). For this reason, the Bohairic translation can be helpful in the reconstruction of the early Greek text of the New Testament. The continued spread of Christianity, and the foundation of national churches, led to the translation of the Bible—often beginning with books from the New Testament—into a variety of other languages at a relatively early date: Armenian, Georgian, Ethiopic, Persian, Sogdian, and eventually Gothic, Old Church Slavonic, Arabic, and Nubian. Modern translations The 16th century saw the rise of Protestantism and an explosion of translations of the New (and Old) Testament into the vernacular. Notable are those of Martin Luther (1522), Jacques Lefèvre d'Étaples (1523), the Froschau Bible (1525–1529, revised in 1574), William Tyndale (1526, revised in 1534, 1535 and 1536), the Brest Bible (1563), and the Authorized Version (also called the "King James Version") (1611). Translations of the New Testament made since the appearance of critical editions of the Greek text (notably those of Tischendorf, Westcott and Hort, and von Soden) have largely used them as their base text. Unlike the Textus Receptus, they have a pronounced Alexandrian character. Standard critical editions are those of Nestle-Åland (the text, though not the full critical apparatus of which is reproduced in the United Bible Societies' "Greek New Testament"), Souter, Vogels, Bover and Merk. Notable translations of the New Testament based on these most recent critical editions include the Revised Standard Version (1946, revised in 1971), La Bible de Jérusalem (1961, revised in 1973 and 2000), the Einheitsübersetzung (1970, final edition 1979), the New American Bible (1970, revised in 1986 and 2011), the New International Version (1973, revised in 1984 and 2011), the Traduction Oecuménique de la Bible (1988, revised in 2004), the New Revised Standard Version (1989) and the English Standard Version (2001, revised in 2007, 2011 and 2016). Theological interpretation in Christian churches According to Gary T. Meadors: The self-witness of the Bible to its inspiration demands a commitment to its unity. The ultimate basis for unity is contained in the claim of divine inspiration in 2 Timothy 3:16 that "all Scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness" (KJV). The term "inspiration" renders the Greek word theopneustos. This term only occurs here in the New Testament and literally means "God-breathed" (the chosen translation of the NIV). The notion of unity in diversity of Scripture claims that the Bible presents a noncontradictory and consistent message concerning God and redemptive history. The fact of diversity is observed in comparing the diversity of time, culture, authors' perspectives, literary genre, and the theological themes. Studies from many theologians considering the "unity in diversity" to be found in the New Testament (and the Bible as a whole) have been collected and summarized by New Testament theologian Frank Stagg. He describes them as some basic presuppositions, tenets, and concerns common among the New Testament writers, giving to the New Testament its "unity in diversity": For the Roman Catholic Church, there are two modes of Revelation: Scripture and Tradition. Both of them are interpreted by the teachings of the Church. The Roman Catholic view is expressed clearly in the Catechism of the Catholic Church (1997): § 82: As a result the Church, to whom the transmission and interpretation of Revelation is entrusted, does not derive her certainty about all revealed truths from the holy Scriptures alone. Both Scripture and Tradition must be accepted and honoured with equal sentiments of devotion and reverence. § 107: The inspired books teach the truth. Since therefore all that the inspired authors or sacred writers affirm should be regarded as affirmed by the Holy Spirit, we must acknowledge that the books of Scripture firmly, faithfully, and without error teach that truth which God, for the sake of our salvation, wished to see confided to the Sacred Scriptures. In Catholic terminology the teaching office is called the Magisterium. The Catholic view should not be confused with the two-source theory. As the Catechism states in §§ 80 and 81, Revelation has "one common source ... two distinct modes of transmission." While many Eastern Orthodox writers distinguish between Scripture and Tradition, Bishop Kallistos Ware says that for the Orthodox there is only one source of the Christian faith, Holy Tradition, within which Scripture exists. Traditional Anglicans believe that "Holy Scripture containeth all things necessary to salvation", (Article VI), but also that the Catholic Creeds "ought thoroughly to be received and believed" (Article VIII), and that the Church "hath authority in Controversies of Faith" and is "a witness and keeper of Holy Writ" (Article XX). In the famous words of Thomas Ken, Bishop of Bath and Wells: "As for my religion, I dye in the holy catholic and apostolic faith professed by the whole Church before the disunion of East and West, more particularly in the communion of the Church of England, as it stands distinguished from all Papal and Puritan innovations, and as it adheres to the doctrine of the Cross."[This quote needs a citation] Following the doctrine of sola scriptura, Protestants believe that their traditions of faith, practice and interpretations carry forward what the scriptures teach, and so tradition is not a source of authority in itself. Their traditions derive authority from the Bible, and are therefore always open to reevaluation. This openness to doctrinal revision has extended in Liberal Protestant traditions even to the reevaluation of the doctrine of Scripture upon which the Reformation was founded, and members of these traditions may even question whether the Bible is infallible in doctrine, inerrant in historical and other factual statements, and whether it has uniquely divine authority. The adjustments made by modern Protestants to their doctrine of scripture vary widely.[citation needed] Within the US, the Chicago Statement on Biblical Inerrancy (1978) articulates evangelical views on this issue.[citation needed][according to whom?] Paragraph four of its summary states: "Being wholly and verbally God-given, Scripture is without error or fault in all its teaching, no less in what it states about God's acts in creation, about the events of world history, and about its own literary origins under God, than in its witness to God's saving grace in individual lives." Officials of the Presbyterian Church USA report: "We acknowledge the role of scriptural authority in the Presbyterian Church, but Presbyterians generally do not believe in biblical inerrancy. Presbyterians do not insist that every detail of chronology or sequence or prescientific description in scripture be true in literal form. Our confessions do teach biblical infallibility. Infallibility affirms the entire truthfulness of scripture without depending on every exact detail." Messianic Judaism generally holds the same view of New Testament authority as evangelical Protestants. According to the view of some Messianic Jewish congregations, Jesus did not annul the Torah, but that its interpretation is revised and ultimately explained through the Apostolic Scriptures. Jehovah's Witnesses accept the New Testament as divinely inspired Scripture, and as infallible in every detail, with equal authority as the Hebrew Scriptures. They view it as the written revelation and good news of the Messiah, the ransom sacrifice of Jesus, and the Kingdom of God, explaining and expounding the Hebrew Bible, not replacing but vitally supplementing it. They also view the New Testament as the primary instruction guide for Christian living, and church discipline. They generally call the New Testament the "Christian Greek Scriptures", and see only the "covenants" as "old" or "new", but not any part of the actual Scriptures themselves. Oneness Pentecostalism subscribes to the common Protestant doctrine of sola scriptura. They view the Bible as the inspired Word of God, and as absolutely inerrant in its contents (though not necessarily in every translation). They regard the New Testament as perfect and inerrant in every way, revealing the Lord Jesus Christ in the Flesh, and his Atonement, and which also explains and illuminates the Old Testament perfectly, and is part of the Bible canon, not because church councils or decrees claimed it so, but by witness of the Holy Spirit. The Seventh-day Adventist Church holds the New Testament as the inspired Word of God, with God influencing the "thoughts" of the Apostles in the writing, not necessarily every word though. The first fundamental belief of the Seventh-Day Adventist church stated that "The Holy Scriptures are the infallible revelation of [God's] will." Adventist theologians generally reject the "verbal inspiration" position on Scripture held by many conservative evangelical Christians. They believe instead that God inspired the thoughts of the biblical authors and apostles, and that the writers then expressed these thoughts in their own words. This view is popularly known as "thought inspiration", and most Adventist members hold to that view. According to Ed Christian, former JATS editor, "few if any ATS members believe in verbal inerrancy". How the Mosaic Law should be applied came up at Adventist conferences in the past, and Adventist theologians such as A. T. Jones and E. J. Waggoner looked at the problem addressed by Paul in Galatians as not the ceremonial law, but rather the wrong use of the law (legalism). They were opposed by Uriah Smith and George Butler at the 1888 Conference. Smith in particular thought the Galatians issue had been settled by Ellen White already, yet in 1890 she claimed that justification by faith is "the third angel's message in verity." White interpreted Colossians 2:14 as saying that the ceremonial law was nailed to the cross. Members of the Church of Jesus Christ of Latter-day Saints (LDS Church) believe that the New Testament, as part of the Christian biblical canon, is accurate "as far as it is translated correctly". They believe the Bible as originally revealed is the word of God, but that the processes of transcription and translation have introduced errors into the texts as currently available, and therefore they cannot be regarded as completely inerrant. In addition to the Old and New Testaments, the Book of Mormon, the Doctrine and Covenants and the Pearl of Great Price are considered part of their scriptural canon. In the arts Most of the influence of the New Testament upon the arts has come from the Gospels and the Book of Revelation.[citation needed] Literary expansion of the Nativity of Jesus found in the Gospels of Matthew and Luke began already in the 2nd century, and the portrayal of the Nativity has continued in various art forms to this day. The earliest Christian art would often depict scenes from the New Testament such as the raising of Lazarus, the baptism of Jesus or the motif of the Good Shepherd. Biblical paraphrases and poetic renditions of stories from the life of Christ (e.g., the Heliand) became popular in the Middle Ages, as did the portrayal of the arrest, trial and execution of Jesus in Passion plays. Indeed, the Passion became a central theme in Christian art and music. The ministry and Passion of Jesus, as portrayed in one or more of the New Testament Gospels, has also been a theme in film, almost since the inception of the medium (e.g., La Passion, France, 1903). See also Notes References Further reading External links |
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[SOURCE: https://en.wikipedia.org/wiki/Synonym_(taxonomy)] | [TOKENS: 2479] |
Contents Synonym (taxonomy) In taxonomy, a synonym is one of two or more scientific names that apply to the same taxon. The botanical and zoological codes of nomenclature treat the concept of synonymy differently. Unlike synonyms in other contexts, in taxonomy a synonym is not interchangeable with the name of which it is a synonym. In taxonomy, synonyms are not equals, but have a different status. For any taxon with a particular circumscription, position, and rank, only one scientific name is considered to be the correct one at any given time (this correct name is to be determined by applying the relevant code of nomenclature). A synonym cannot exist in isolation: it is always an alternative to a different scientific name. Given that the correct name of a taxon depends on the taxonomic viewpoint used (resulting in a particular circumscription, position and rank) a name that is one taxonomist's synonym may be another taxonomist's correct name (and vice versa). Synonyms may arise whenever the same taxon is described and named more than once independently. They may also arise when existing taxa are changed, as when two taxa are joined to become one, a species is moved to a different genus, a variety is moved to a different species, etc. Synonyms also come about when the codes of nomenclature change, so that older names are no longer acceptable; for example, Erica herbacea L. has been rejected in favour of the conserved name of Erica carnea L. and is thus its synonym. General usage To the general user of scientific names, in fields such as agriculture, horticulture, ecology, general science, etc., a synonym is a name that was previously used as the correct scientific name (in handbooks and similar sources) but which has been displaced by another scientific name, which is now regarded as correct. Thus Oxford Dictionaries Online defines the term as "a taxonomic name which has the same application as another, especially one which has been superseded and is no longer valid". In handbooks and general texts, it is useful to have synonyms mentioned as such after the current scientific name, so as to avoid confusion. For example, if the much-advertised name change should go through and the scientific name of the fruit fly were changed to Sophophora melanogaster, it would be very helpful if any mention of this name was accompanied by "(syn. Drosophila melanogaster)". Synonyms used in this way may not always meet the strict definitions of the term "synonym" in the formal rules of nomenclature which govern scientific names (see below). Changes of scientific name have two causes: they may be taxonomic or nomenclatural. A name change may be caused by changes in the circumscription, position or rank of a taxon, representing a change in taxonomic, scientific insight (as would be the case for the fruit fly, mentioned above). A name change may be due to purely nomenclatural reasons, that is, based on the rules of nomenclature; as for example when an older name is (re)discovered which has priority over the current name. Speaking in general, name changes for nomenclatural reasons have become less frequent over time as the rules of nomenclature allow for names to be conserved, so as to promote stability of scientific names. Zoology In zoological nomenclature, codified in the International Code of Zoological Nomenclature, synonyms are different scientific names of the same taxonomic rank that pertain to that same taxon. For example, a particular species could, over time, have had two or more species-rank names published for it, while the same is applicable at higher ranks such as genera, families, orders, etc. In each case, the earliest published name is called the senior synonym, while the later name is the junior synonym. In the case where two names for the same taxon have been published simultaneously, the valid name is selected according to the principle of the first reviser such that, for example, of the names Strix scandiaca and Strix noctua (Aves), both published by Linnaeus in the same work at the same date for the taxon now determined to be the snowy owl, the epithet scandiaca has been selected as the valid name, with noctua becoming the junior synonym. (Incidentally, this species has since been reclassified and currently resides in the genus Bubo, as Bubo scandiacus). One basic principle of zoological nomenclature is that the earliest correctly published (and thus available) name, the senior synonym, by default takes precedence in naming rights and therefore, unless other restrictions interfere, must be used for the taxon. However, junior synonyms are still important to document, because if the earliest name cannot be used (for example, because the same spelling had previously been used for a name established for another taxon), then the next available junior synonym must be used for the taxon. For other purposes, if a researcher is interested in consulting or compiling all currently known information regarding a taxon, some of this (including species descriptions, distribution, ecology and more) may well have been published under names now regarded as outdated (i.e., synonyms) and so it is again useful to know a list of historic synonyms which may have been used for a given current (valid) taxon name. Objective synonyms refer to taxa with the same type and same rank (more or less the same taxon, although circumscription may vary, even widely). This may be species-group taxa of the same rank with the same type specimen, genus-group taxa of the same rank with the same type species or if their type species are themselves objective synonyms, of family-group taxa with the same type genus, etc. In the case of subjective synonyms, there is no such shared type, so the synonymy is open to taxonomic judgement, meaning that there is room for debate: one researcher might consider the two (or more) types to refer to one and the same taxon, another might consider them to belong to different taxa. For example, John Edward Gray published the name Antilocapra anteflexa in 1855 for a species of pronghorn, based on a pair of horns. However, it is now commonly accepted that his specimen was an unusual individual of the species Antilocapra americana published by George Ord in 1815. Ord's name thus takes precedence, with Antilocapra anteflexa being a junior subjective synonym. Objective synonyms are common at the rank of genera, because for various reasons two genera may contain the same type species; these are objective synonyms. In many cases researchers established new generic names because they thought this was necessary or did not know that others had previously established another genus for the same group of species. An example is the genus Pomatia Beck, 1837, which was established for a group of terrestrial snails containing as its type species the Burgundy or Roman snail Helix pomatia—since Helix pomatia was already the type species for the genus Helix Linnaeus, 1758, the genus Pomatia was an objective synonym (and useless). On the same occasion, Helix is also a synonym of Pomatia, but it is older and so it has precedence. At the species level, subjective synonyms are common because of an unexpectedly large range of variation in a species, or simple ignorance about an earlier description, may lead a biologist to describe a newly discovered specimen as a new species. A common reason for objective synonyms at this level is the creation of a replacement name. A junior synonym can be given precedence over a senior synonym, primarily when the senior name has not been used since 1899, and the junior name is in common use. The older name may be declared to be a nomen oblitum, and the junior name declared a nomen protectum. This rule exists primarily to prevent the confusion that would result if a well-known name, with a large accompanying body of literature, were to be replaced by a completely unfamiliar name. An example is the European land snail Petasina edentula (Draparnaud, 1805). In 2002, researchers found that an older name Helix depilata Draparnaud, 1801 referred to the same species, but this name had never been used after 1899 and was fixed as a nomen oblitum under this rule by Falkner et al. 2002. Such a reversal of precedence is also possible if the senior synonym was established after 1900, but only if the International Commission on Zoological Nomenclature (ICZN) approves an application. (Here the C in ICZN stands for Commission, not Code as it does at the beginning of § Zoology. The two are related, with only one word difference between their names.) For example, the scientific name of the red imported fire ant, Solenopsis invicta was published by Buren in 1972, who did not know that this species was first named Solenopsis saevissima wagneri by Santschi in 1916; as there were thousands of publications using the name invicta before anyone discovered the synonymy, the ICZN, in 2001, ruled that invicta would be given precedence over wagneri. To qualify as a synonym in zoology, a name must be properly published in accordance with the rules. Manuscript names and names that were mentioned without any description (nomina nuda) are not considered as synonyms in zoological nomenclature. Botany In botanical nomenclature, a synonym is a name that is not correct for the circumscription, position, and rank of the taxon as considered in the particular botanical publication. It is always "a synonym of the correct scientific name", but which name is correct depends on the taxonomic opinion of the author. In botany the various kinds of synonyms are: In botany, although a synonym must be a formally accepted scientific name (a validly published name): a listing of "synonyms", a "synonymy", often contains designations that for some reason did not make it as a formal name, such as manuscript names, or even misidentifications (although it is now the usual practice to list misidentifications separately). Comparison between zoology and botany Although the basic principles are fairly similar, the treatment of synonyms in botanical nomenclature differs in detail and terminology from zoological nomenclature, where the correct name is included among synonyms, although as first among equals it is the "senior synonym": Practical applications Scientific papers may include lists of taxa, synonymizing existing taxa and (in some cases) listing references to them. The status of a synonym may be indicated by symbols, as for instance in a system proposed for use in paleontology by Rudolf Richter. In that system a v before the year would indicate that the authors have inspected the original material; a . that they take on the responsibility for the act of synonymizing the taxa. The accurate use of scientific names, including synonyms, is crucial in biomedical and pharmacological research involving plants. Failure to use correct botanical nomenclature can lead to ambiguity, hinder reproducibility of results, and potentially cause errors in medicine. Best practices for publication suggest that researchers should provide the currently accepted binomial with author citation, relevant synonyms, and the accepted family name according to the Angiosperm Phylogeny Group III classification. This practice ensures clear communication, allows proper linking of research to existing literature, and provides insight into phylogenetic relationships that may be relevant to shared chemical constituents or physiological effects. Online databases now make it easy for researchers to access correct nomenclature and synonymy information for plant species. Other usage The traditional concept of synonymy is often expanded in taxonomic literature to include pro parte (or "for part") synonyms. These are caused by splits and circumscriptional changes. They are usually indicated by the abbreviation "p.p." For example: See also References Bibliography |
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[SOURCE: https://en.wikipedia.org/wiki/Porifera] | [TOKENS: 10785] |
Contents Sponge Parazoa/Ahistozoa (sans Placozoa) Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (/pəˈrɪfərəˌ pɔː-/; meaning 'pore bearer'). They are sessile filter feeders that are bound to the seabed, and are one of the most ancient members of macrobenthos, with many historical species being important reef-building organisms. Sponges are multicellular organisms consisting of jelly-like mesohyl sandwiched between two thin layers of cells, and usually have tube-like bodies full of pores and channels that allow water to circulate through them. They have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. They do not have complex nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes, usually via flagella movements of the so-called "collar cells". Sponges may be the sister group to all other animals, although the evidence for this relationship remains inconclusive. Fossil evidence of primitive sponges such as Otavia dates to as early as the Tonian period (around 800 Mya). The branch of zoology that studies sponges is spongiology. Etymology The term sponge derives from the Ancient Greek word σπόγγος spóngos. The scientific name Porifera is a neuter plural of the Modern Latin term porifer, which comes from the roots porus meaning "pore, opening", and -fer meaning "bearing or carrying". Overview Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs. Some of them are radially symmetrical, but most are asymmetrical. The shapes of their bodies are adapted for maximal efficiency of water flow through the central cavity, where the water deposits nutrients and then leaves through a hole called the osculum. The single-celled choanoflagellates resemble the choanocyte cells of sponges which are used to drive their water flow systems and capture most of their food. This along with phylogenetic studies of ribosomal molecules have been used as morphological evidence to suggest sponges are the sister group to the rest of animals. A great majority are marine (salt-water) species, ranging in habitat from tidal zones to depths exceeding 8,800 m (5.5 mi), though there are freshwater species. All adult sponges are sessile, meaning that they attach to an underwater surface and remain fixed in place (i.e., do not travel). While in their larval stage of life, they are motile. Many sponges have internal skeletons of spicules (skeletal-like fragments of calcium carbonate or silicon dioxide), and/or spongin (a modified type of collagen protein). An internal gelatinous matrix called mesohyl functions as an endoskeleton, and it is the only skeleton in soft sponges that encrust such hard surfaces as rocks. More commonly, the mesohyl is stiffened by mineral spicules, by spongin fibers, or both. Most sponges (over 90% of all known species) are demosponges, which have the widest range of habitats (including all freshwater ones); they use spongin, silica spicules, or both, and some species have calcium carbonate exoskeletons. Calcareans have calcium carbonate spicules and, in some species, calcium carbonate exoskeletons; they are restricted to relatively shallow marine waters where production of calcium carbonate is easiest.: 179 The fragile hexactinellids or glass sponges use "scaffolding" of silica spicules and are restricted to polar regions or ocean depths where predators are rare. Fossils of all of these types have been found in rocks dated from 580 million years ago. In addition Archaeocyathids, whose fossils are common in rocks from 530 to 490 million years ago, are now regarded as a type of sponge. The smallest class of extant sponges are homoscleromorphs, which either have calcium carbonate spicules like the calcereans or are aspiculate, and found in shaded marine environments like caves and overhangs. Although most of the approximately 5,000–10,000 known species of sponges feed on bacteria and other microscopic food in the water, some host photosynthesizing microorganisms as endosymbionts, and these alliances often produce more food and oxygen than they consume. A few species of sponges that live in food-poor environments have evolved as carnivores that prey mainly on small crustaceans. Most sponges reproduce sexually, but they can also reproduce asexually. Sexually reproducing species release sperm cells into the water to fertilize ova released or retained by its mate or "mother"; the fertilized eggs develop into larvae which swim off in search of places to settle.: 183–185 Sponges are known for regenerating from fragments that are broken off, although this only works if the fragments include the right types of cells. Some species reproduce by budding. When environmental conditions become less hospitable to the sponges, for example as temperatures drop, many freshwater species and a few marine ones produce gemmules, "survival pods" of unspecialized cells that remain dormant until conditions improve; they then either form completely new sponges or recolonize the skeletons of their parents.: 120–127 The few species of demosponge that have entirely soft fibrous skeletons with no hard elements have been used by humans over thousands of years for several purposes, including as padding and as cleaning tools. By the 1950s, though, these had been overfished so heavily that the industry almost collapsed, and most sponge-like materials are now synthetic. Sponges and their microscopic endosymbionts are now being researched as possible sources of medicines for treating a wide range of diseases. Dolphins have been observed using sponges as tools while foraging. Distinguishing features Sponges constitute the phylum Porifera, and have been defined as sessile metazoans (multicelled immobile animals) that have water intake and outlet openings connected by chambers lined with choanocytes, cells with whip-like flagella.: 29 However, a few carnivorous sponges have lost these water flow systems and the choanocytes.: 39 All known living sponges can remold their bodies, as most types of their cells can move within their bodies and a few can change from one type to another. Even if a few sponges are able to produce mucus – which acts as a microbial barrier in all other animals – no sponge with the ability to secrete a functional mucus layer has been recorded. Without such a mucus layer their living tissue is covered by a layer of microbial symbionts, which can contribute up to 40–50% of the sponge wet mass. This inability to prevent microbes from penetrating their porous tissue could be a major reason why they have never evolved a more complex anatomy. Like cnidarians (jellyfish, etc.) and ctenophores (comb jellies), and unlike all other known metazoans, sponges' bodies consist of a non-living jelly-like mass (mesohyl) sandwiched between two main layers of cells. Cnidarians and ctenophores have simple nervous systems, and their cell layers are bound by internal connections and by being mounted on a basement membrane a thin fibrous mat, also known as a basal lamina. Sponges do not have a nervous system similar to that of vertebrates but may have one that is quite different. Their middle jelly-like layers have large and varied populations of cells, and some types of cells in their outer layers may move into the middle layer and change their functions. Basic structure A sponge's body is hollow and is held in shape by the mesohyl, a jelly-like substance made mainly of collagen and reinforced by a dense network of fibers also made of collagen. 18 distinct cell types have been identified. The inner surface is covered with choanocytes, cells with cylindrical or conical collars surrounding one flagellum per choanocyte. The wave-like motion of the whip-like flagella drives water through the sponge's body. All sponges have ostia, channels leading to the interior through the mesohyl, and in most sponges these are controlled by tube-like porocytes that form closable inlet valves. Pinacocytes, plate-like cells, form a single-layered external skin over all other parts of the mesohyl that are not covered by choanocytes, and the pinacocytes also digest food particles that are too large to enter the ostia, while those at the base of the animal are responsible for anchoring it. Other types of cells live and move within the mesohyl: Many larval sponges possess neuron-less eyes that are based on cryptochromes. They mediate phototaxic behavior. Glass sponges present a distinctive variation on this basic plan. Their spicules, which are made of silica, form a scaffolding-like framework between whose rods the living tissue is suspended like a cobweb that contains most of the cell types. This tissue is a syncytium that in some ways behaves like many cells that share a single external membrane, and in others like a single cell with multiple nuclei. Most sponges work rather like chimneys: they take in water at the bottom and eject it from the osculum at the top. Since ambient currents are faster at the top, the suction effect that they produce by Bernoulli's principle does some of the work for free. Sponges can control the water flow by various combinations of wholly or partially closing the osculum and ostia (the intake pores) and varying the beat of the flagella, and may shut it down if there is a lot of sand or silt in the water. Although the layers of pinacocytes and choanocytes resemble the epithelia of more complex animals, they are not bound tightly by cell-to-cell connections or a basal lamina (thin fibrous sheet underneath). The flexibility of these layers and re-modeling of the mesohyl by lophocytes allow the animals to adjust their shapes throughout their lives to take maximum advantage of local water currents.: 83 The simplest body structure in sponges is a tube or vase shape known as "asconoid", but this severely limits the size of the animal. The body structure is characterized by a stalk-like spongocoel surrounded by a single layer of choanocytes. If it is simply scaled up, the ratio of its volume to surface area increases, because surface increases as the square of length or width while volume increases proportionally to the cube. The amount of tissue that needs food and oxygen is determined by the volume, but the pumping capacity that supplies food and oxygen depends on the area covered by choanocytes. Asconoid sponges seldom exceed 1 mm (0.039 in) in diameter. Some sponges overcome this limitation by adopting the "syconoid" structure, in which the body wall is pleated. The inner pockets of the pleats are lined with choanocytes, which connect to the outer pockets of the pleats by ostia. This increase in the number of choanocytes and hence in pumping capacity enables syconoid sponges to grow up to a few centimeters in diameter. The "leuconoid" pattern boosts pumping capacity further by filling the interior almost completely with mesohyl that contains a network of chambers lined with choanocytes and connected to each other and to the water intakes and outlet by tubes. Leuconid sponges grow to over 1 m (3.3 ft) in diameter, and the fact that growth in any direction increases the number of choanocyte chambers enables them to take a wider range of forms, for example, "encrusting" sponges whose shapes follow those of the surfaces to which they attach. All freshwater and most shallow-water marine sponges have leuconid bodies. The networks of water passages in glass sponges are similar to the leuconid structure. In all three types of structure, the cross-section area of the choanocyte-lined regions is much greater than that of the intake and outlet channels. This makes the flow slower near the choanocytes and thus makes it easier for them to trap food particles. For example, in Leuconia, a small leuconoid sponge about 10 centimetres (3.9 in) tall and 1 centimetre (0.39 in) in diameter, water enters each of more than 80,000 intake canals at 6 cm per minute. However, because Leuconia has more than 2 million flagellated chambers whose combined diameter is much greater than that of the canals, water flow through chambers slows to 3.6 cm per hour, making it easy for choanocytes to capture food. All the water is expelled through a single osculum at about 8.5 cm per second, fast enough to carry waste products some distance away. In zoology, a skeleton is any fairly rigid structure of an animal, irrespective of whether it has joints and irrespective of whether it is biomineralized. The mesohyl functions as an endoskeleton in most sponges, and is the only skeleton in soft sponges that encrust hard surfaces such as rocks. More commonly the mesohyl is stiffened by mineral spicules, by spongin fibers or both. Spicules, which are present in most but not all species, may be made of silica or calcium carbonate, and vary in shape from simple rods to three-dimensional "stars" with up to six rays. Spicules are produced by sclerocyte cells, and may be separate, connected by joints, or fused. Some sponges also secrete exoskeletons that lie completely outside their organic components. For example, sclerosponges ("hard sponges") have massive calcium carbonate exoskeletons over which the organic matter forms a thin layer with choanocyte chambers in pits in the mineral. These exoskeletons are secreted by the pinacocytes that form the animals' skins. Vital functions Although adult sponges are fundamentally sessile animals, some marine and freshwater species can move across the sea bed at speeds of 1–4 mm (0.039–0.157 in) per day, as a result of amoeba-like movements of pinacocytes and other cells. A few species can contract their whole bodies, and many can close their oscula and ostia. Juveniles drift or swim freely, while adults are stationary. Sponges do not have distinct circulatory, respiratory, digestive, and excretory systems – instead, the water flow system supports all these functions. They filter food particles out of the water flowing through them. Particles larger than 50 micrometers cannot enter the ostia and pinacocytes consume them by phagocytosis (engulfing and intracellular digestion). Particles from 0.5 μm to 50 μm are trapped in the ostia, which taper from the outer to inner ends. These particles are consumed by pinacocytes or by archaeocytes which partially extrude themselves through the walls of the ostia. Bacteria-sized particles, below 0.5 micrometers, pass through the ostia and are caught and consumed by choanocytes. Since the smallest particles are by far the most common, choanocytes typically capture 80% of a sponge's food supply. Archaeocytes transport food packaged in vesicles from cells that directly digest food to those that do not. At least one species of sponge has internal fibers that function as tracks for use by nutrient-carrying archaeocytes, and these tracks also move inert objects. It used to be claimed that glass sponges could live on nutrients dissolved in sea water and were very averse to silt. However, a study in 2007 found no evidence of this and concluded that they extract bacteria and other micro-organisms from water very efficiently (about 79%) and process suspended sediment grains to extract such prey. Collar bodies digest food and distribute it wrapped in vesicles that are transported by dynein "motor" molecules along bundles of microtubules that run throughout the syncytium. Sponges' cells absorb oxygen by diffusion from water into cells as water flows through body, into which carbon dioxide and other soluble waste products such as ammonia also diffuse. Archeocytes remove mineral particles that threaten to block the ostia, transport them through the mesohyl and generally dump them into the outgoing water current, although some species incorporate them into their skeletons. In waters where the supply of food particles is very poor, some species prey on crustaceans and other small animals. As of 2014, a total of 137 species had been discovered. Most belong to the family Cladorhizidae, but a few members of the Guitarridae and Esperiopsidae are also carnivores. In most cases, little is known about how they actually capture prey, although some species are thought to use either sticky threads or hooked spicules. Most carnivorous sponges live in deep waters, up to 8,840 m (5.49 mi), and the development of deep-ocean exploration techniques is expected to lead to the discovery of several more. However, one species has been found in Mediterranean caves at depths of 17–23 m (56–75 ft), alongside the more usual filter-feeding sponges. The cave-dwelling predators capture crustaceans under 1 mm (0.039 in) long by entangling them with fine threads, digest them by enveloping them with further threads over the course of a few days, and then return to their normal shape; there is no evidence that they use venom. Most known carnivorous sponges have completely lost the water flow system and choanocytes. However, the genus Chondrocladia uses a highly modified water flow system to inflate balloon-like structures that are used for capturing prey. Freshwater sponges often host green algae as endosymbionts within archaeocytes and other cells and benefit from nutrients produced by the algae. Many marine species host other photosynthesizing organisms, most commonly cyanobacteria but in some cases dinoflagellates. Symbiotic cyanobacteria may form a third of the total mass of living tissue in some sponges, and some sponges gain 48% to 80% of their energy supply from these micro-organisms. In 2008, a University of Stuttgart team reported that spicules made of silica conduct light into the mesohyl, where the photosynthesizing endosymbionts live. Sponges that host photosynthesizing organisms are most common in waters with relatively poor supplies of food particles and often have leafy shapes that maximize the amount of sunlight they collect. A recently discovered carnivorous sponge that lives near hydrothermal vents hosts methane-eating bacteria and digests some of them. Sponges do not have the complex immune systems of most other animals. However, they reject grafts from other species but accept them from other members of their own species. In a few marine species, gray cells play the leading role in rejection of foreign material. When invaded, they produce a chemical that stops movement of other cells in the affected area, thus preventing the intruder from using the sponge's internal transport systems. If the intrusion persists, the grey cells concentrate in the area and release toxins that kill all cells in the area. The "immune" system can stay in this activated state for up to three weeks. Sponges have three asexual methods of reproduction: after fragmentation, by budding, and by producing gemmules. Fragments of sponges may be detached by currents or waves. They use the mobility of their pinacocytes and choanocytes and reshaping of the mesohyl to re-attach themselves to a suitable surface and then rebuild themselves as small but functional sponges over the course of several days. The same capabilities enable sponges that have been squeezed through a fine cloth to regenerate.: 239 A sponge fragment can only regenerate if it contains both collencytes to produce mesohyl and archeocytes to produce all the other cell types. A very few species reproduce by budding.: 90–94 Gemmules are "survival pods" which a few marine sponges and many freshwater species produce by the thousands when dying and which some, mainly freshwater species, regularly produce in autumn. Spongocytes make gemmules by wrapping shells of spongin, often reinforced with spicules, round clusters of archeocytes that are full of nutrients.: 87–88 Freshwater gemmules may also include photosynthesizing symbionts. The gemmules then become dormant, and in this state can survive cold, drying out, lack of oxygen and extreme variations in salinity. Freshwater gemmules often do not revive until the temperature drops, stays cold for a few months and then reaches a near-"normal" level. When a gemmule germinates, the archeocytes round the outside of the cluster transform into pinacocytes, a membrane over a pore in the shell bursts, the cluster of cells slowly emerges, and most of the remaining archeocytes transform into other cell types needed to make a functioning sponge. Gemmules from the same species but different individuals can join forces to form one sponge.: 89–90 Some gemmules are retained within the parent sponge, and in spring it can be difficult to tell whether an old sponge has revived or been "recolonized" by its own gemmules. Most sponges are hermaphrodites (function as both sexes simultaneously), although sponges have no gonads (reproductive organs). Sperm are produced by choanocytes or entire choanocyte chambers that sink into the mesohyl and form spermatic cysts while eggs are formed by transformation of archeocytes, or of choanocytes in some species. Each egg generally acquires a yolk by consuming "nurse cells". During spawning, sperm burst out of their cysts and are expelled via the osculum. If they contact another sponge of the same species, the water flow carries them to choanocytes that engulf them but, instead of digesting them, metamorphose to an ameboid form and carry the sperm through the mesohyl to eggs, which in most cases engulf the carrier and its cargo.: 77 A few species release fertilized eggs into the water, but most retain the eggs until they hatch. By retaining the eggs, the parents can transfer symbiotic microorganisms directly to their offspring through vertical transmission, while the species who release their eggs into the water has to acquire symbionts horizontally (a combination of both is probably most common, where larvae with vertically transmitted symbionts also acquire others horizontally). There are four types of larvae, but all are lecithotrophic (non-feeding) balls of cells with an outer layer of cells whose flagella or cilia enable the larvae to move. After swimming for a few days the larvae sink and crawl until they find a place to settle. Most of the cells transform into archeocytes and then into the types appropriate for their locations in a miniature adult sponge.: 77 Glass sponge embryos start by dividing into separate cells, but once 32 cells have formed they rapidly transform into larvae that externally are ovoid with a band of cilia round the middle that they use for movement, but internally have the typical glass sponge structure of spicules with a cobweb-like main syncitium draped around and between them and choanosyncytia with multiple collar bodies in the center. The larvae then leave their parents' bodies. The cytological progression of porifera oogenesis and spermatogenesis (gametogenesis) is very similar to that of other metazoa. Most of the genes from the classic set of meiotic genes, including genes for DNA recombination and double-strand break repair, that are conserved in eukaryotes are expressed in the sponges (e.g. Geodia hentscheli and Geodia phlegraei). Since porifera are considered to be the earliest divergent animals, these findings indicate that the basic toolkit of meiosis including capabilities for recombination and DNA repair were present early in eukaryote evolution. Sponges in temperate regions live for at most a few years, but some tropical species and perhaps some deep-ocean ones may live for 200 years or more. Some calcified demosponges grow by only 0.2 mm (0.0079 in) per year and, if that rate is constant, specimens 1 m (3.3 ft) wide must be about 5,000 years old. Some sponges start sexual reproduction when only a few weeks old, while others wait until they are several years old. Adult sponges lack neurons or any other kind of nervous tissue. However, most species have the ability to perform movements that are coordinated all over their bodies, mainly contractions of the pinacocytes, squeezing the water channels and thus expelling excess sediment and other substances that may cause blockages. Some species can contract the osculum independently of the rest of the body. Sponges may also contract in order to reduce the area that is vulnerable to attack by predators. In cases where two sponges are fused, for example if there is a large but still unseparated bud, these contraction waves slowly become coordinated in both of the "Siamese twins". The coordinating mechanism is unknown, but may involve chemicals similar to neurotransmitters. However, glass sponges rapidly transmit electrical impulses through all parts of the syncytium, and use this to halt the motion of their flagella if the incoming water contains toxins or excessive sediment. Myocytes are thought to be responsible for closing the osculum and for transmitting signals between different parts of the body. Sponges contain genes very similar to those that contain the "recipe" for the post-synaptic density, an important signal-receiving structure in the neurons of all other animals. However, in sponges these genes are only activated in "flask cells" that appear only in larvae and may provide some sensory capability while the larvae are swimming. This raises questions about whether flask cells represent the predecessors of true neurons or are evidence that sponges' ancestors had true neurons but lost them as they adapted to a sessile lifestyle. Ecology Sponges are worldwide in their distribution, living in a wide range of ocean habitats, from the polar regions to the tropics. Most live in quiet, clear waters, because sediment stirred up by waves or currents would block their pores, making it difficult for them to feed and breathe. The greatest numbers of sponges are usually found on firm surfaces such as rocks, but some sponges can attach themselves to soft sediment by means of a root-like base. Sponges are more abundant but less diverse in temperate waters than in tropical waters, possibly because organisms that prey on sponges are more abundant in tropical waters. Glass sponges are the most common in polar waters and in the depths of temperate and tropical seas, as their very porous construction enables them to extract food from these resource-poor waters with the minimum of effort. Demosponges and calcareous sponges are abundant and diverse in shallower non-polar waters. The different classes of sponge live in different ranges of habitat: Sponges with photosynthesizing endosymbionts produce up to three times more oxygen than they consume, as well as more organic matter than they consume. Such contributions to their habitats' resources are significant along Australia's Great Barrier Reef but relatively minor in the Caribbean. Many sponges shed spicules, forming a dense carpet several meters deep that keeps away echinoderms which would otherwise prey on the sponges. They also produce toxins that prevent other sessile organisms such as bryozoans or sea squirts from growing on or near them, making sponges very effective competitors for living space. One of many examples includes ageliferin, which has antibacterial action and causes biofilms to dissolve. A few species, including the Caribbean fire sponge Tedania ignis, cause a severe rash in humans who handle them. Turtles and some fish feed mainly on sponges. It is often said that sponges produce chemical defenses against such predators. However, experiments have been unable to establish a relationship between the toxicity of chemicals produced by sponges and how they taste to fish, which would diminish the usefulness of chemical defenses as deterrents. Predation by fish may even help to spread sponges by detaching fragments. However, some studies have shown fish showing a preference for non-chemically-defended sponges, and another study found that high levels of coral predation did predict the presence of chemically defended species. Glass sponges produce no toxic chemicals, and live in very deep water where predators are rare. Spongeflies, also known as spongillaflies (Neuroptera, Sisyridae), are specialist predators of freshwater sponges. The female lays her eggs on vegetation overhanging water. The larvae hatch and drop into the water where they seek out sponges to feed on. They use their elongated mouthparts to pierce the sponge and suck the fluids within. The larvae of some species cling to the surface of the sponge while others take refuge in the sponge's internal cavities. The fully grown larvae leave the water and spin a cocoon in which to pupate. The Caribbean chicken-liver sponge Chondrilla nucula secretes toxins that kill coral polyps, allowing the sponges to grow over the coral skeletons. Others, especially in the family Clionaidae, use corrosive substances secreted by their archeocytes to tunnel into rocks, corals and the shells of dead mollusks. Sponges may remove up to 1 m (3.3 ft) per year from reefs, creating visible notches just below low-tide level. Caribbean sponges of the genus Aplysina suffer from Aplysina red band syndrome. This causes Aplysina to develop one or more rust-colored bands, sometimes with adjacent bands of necrotic tissue. These lesions may completely encircle branches of the sponge. The disease appears to be contagious and impacts approximately ten percent of A. cauliformis on Bahamian reefs. The rust-colored bands are caused by a cyanobacterium, but it is unknown whether this organism actually causes the disease. In addition to hosting photosynthesizing endosymbionts, sponges are noted for their wide range of collaborations with other organisms. The relatively large encrusting sponge Lissodendoryx colombiensis is most common on rocky surfaces, but has extended its range into seagrass meadows by letting itself be surrounded or overgrown by seagrass sponges, which are distasteful to the local starfish and therefore protect Lissodendoryx against them; in return, the seagrass sponges get higher positions away from the sea-floor sediment. Shrimps of the genus Synalpheus form colonies in sponges, and each shrimp species inhabits a different sponge species, making Synalpheus one of the most diverse crustacean genera. Specifically, Synalpheus regalis utilizes the sponge not only as a food source, but also as a defense against other shrimp and predators. As many as 16,000 individuals inhabit a single loggerhead sponge, feeding off the larger particles that collect on the sponge as it filters the ocean to feed itself. Other crustaceans such as hermit crabs commonly have a specific species of sponge, Pseudospongosorites, grow on them as both the sponge and crab occupy gastropod shells until the crab and sponge outgrow the shell, eventually resulting in the crab using the sponge's body as protection instead of the shell until the crab finds a suitable replacement shell. Most sponges are detritivores which filter organic debris particles and microscopic life forms from ocean water. In particular, sponges occupy an important role as detritivores in coral reef food webs by recycling detritus to higher trophic levels. The hypothesis has been made that coral reef sponges facilitate the transfer of coral-derived organic matter to their associated detritivores via the production of sponge detritus, as shown in the diagram. Several sponge species are able to convert coral-derived DOM into sponge detritus, and transfer organic matter produced by corals further up the reef food web. Corals release organic matter as both dissolved and particulate mucus, as well as cellular material such as expelled Symbiodinium. Organic matter could be transferred from corals to sponges by all these pathways, but DOM likely makes up the largest fraction, as the majority (56 to 80%) of coral mucus dissolves in the water column, and coral loss of fixed carbon due to expulsion of Symbiodinium is typically negligible (0.01%) compared with mucus release (up to ~40%). Coral-derived organic matter could also be indirectly transferred to sponges via bacteria, which can also consume coral mucus. Besides a one to one symbiotic relationship, it is possible for a host to become symbiotic with a microbial consortium, resulting in a diverse sponge microbiome. Sponges are able to host a wide range of microbial communities that can also be very specific. The microbial communities that form a symbiotic relationship with the sponge can amount to as much as 35% of the biomass of its host. The term for this specific symbiotic relationship, where a microbial consortia pairs with a host is called a holobiotic relationship. The sponge as well as the microbial community associated with it will produce a large range of secondary metabolites that help protect it against predators through mechanisms such as chemical defense. The sponge holobiont is an example of the concept of nested ecosystems. Environmental factors act at multiple scales to alter microbiome, holobiont, community, and ecosystem scale processes. Thus, factors that alter microbiome functioning can lead to changes at the holobiont, community, or even ecosystem level and vice versa, illustrating the necessity of considering multiple scales when evaluating functioning in nested ecosystems. Some of these relationships include endosymbionts within bacteriocyte cells, and cyanobacteria or microalgae found below the pinacoderm cell layer where they are able to receive the highest amount of light, used for phototrophy. They can host over 50 different microbial phyla and candidate phyla, including Alphaprotoebacteria, Actinomycetota, Chloroflexota, Nitrospirota, "Cyanobacteria", the taxa Gamma-, the candidate phylum Poribacteria, and Thaumarchaea. Systematics Carl Linnaeus, who classified most kinds of sessile animals as belonging to the order Zoophyta in the class Vermes, mistakenly identified the genus Spongia as plants in the order Algae.[further explanation needed] For a long time thereafter, sponges were assigned to subkingdom Parazoa ("beside the animals") separated from the Eumetazoa which formed the rest of the kingdom Animalia. The phylum Porifera is further divided into classes mainly according to the composition of their skeletons: In the 1970s, sponges with massive calcium carbonate skeletons were assigned to a separate class, Sclerospongiae, otherwise known as "coralline sponges". However, in the 1980s, it was found that these were all members of either the Calcarea or the Demospongiae. So far scientific publications have identified about 9,000 poriferan species, of which about 400 are glass sponges, about 500 are calcareous species, and the rest are demosponges. However, some types of habitat, such as vertical rock and cave walls and galleries in rock and coral boulders, have been investigated very little, even in shallow seas, and may harbor many more species. Sponges were traditionally distributed in three classes: calcareous sponges (Calcarea), glass sponges (Hexactinellida) and demosponges (Demospongiae). However, studies have now shown that the Homoscleromorpha, a group thought to belong to the Demospongiae, has a genetic relationship well separated from other sponge classes.: 153–154 Therefore, they have recently been recognized as the fourth class of sponges. Sponges are divided into classes mainly according to the composition of their skeletons: These are arranged in evolutionary order as shown below in ascending order of their evolution from top to bottom: The phylogeny of sponges has been debated heavily since the advent of phylogenetics. Originally thought to be the sister group to all other animal phyla, there is now considerable evidence that Ctenophora may hold that title instead. Additionally, the monophyly of the phylum is now under question. Several studies have concluded that all other animals emerged from within the sponges, and usually recover that the calcareous sponges and Homoscleromorpha are closer to other animals than to demosponges. The internal relationships of Porifera have proven to be less uncertain. A close relationship of Homoscleromorpha and Calcarea has been recovered in nearly all studies, whether or not they support sponge or eumetazoan monophyly. The position of glass sponges is also fairly certain, with a majority of studies recovering them as the sister of the demosponges. Thus, the uncertainty at the base of the animal family tree is probably best represented by the below cladogram. Hexactinellida Demospongiae Calcarea Homoscleromorpha Ctenophora ParaHoxozoa Evolutionary history Although molecular clocks and biomarkers suggest sponges existed well before the Cambrian explosion of life, silica spicules like those of demosponges are absent from the fossil record until the Cambrian. An unsubstantiated 2002 report exists of spicules in rocks dated around 750 million years ago. Well-preserved fossil sponges from about 580 million years ago in the Ediacaran period have been found in the Doushantuo Formation. These fossils, which include: spicules; pinacocytes; porocytes; archeocytes; sclerocytes; and the internal cavity, have been classified as demosponges. The Ediacaran record of sponges also contains two other genera: the stem-hexactinellid Helicolocellus from the Dengying Formation and the possible stem-archaeocyathan Arimasia from the Nama Group. These genera are both from the "Nama assemblage" of Ediacaran biota, although whether this is due to a genuine lack beforehand or preservational bias is uncertain. Fossils of glass sponges have been found from around 540 million years ago in rocks in Australia, China, and Mongolia. Early Cambrian sponges from Mexico belonging to the genus Kiwetinokia show evidence of fusion of several smaller spicules to form a single large spicule. Calcium carbonate spicules of calcareous sponges have been found in Early Cambrian rocks from about 530 to 523 million years ago in Australia. Other probable demosponges have been found in the Early Cambrian Chengjiang fauna, from 525 to 520 million years ago. Fossils found in the Canadian Northwest Territories dating to 890 million years ago may be sponges; if this finding is confirmed, it suggests the first animals appeared before the Neoproterozoic oxygenation event. Freshwater sponges appear to be much younger, as the earliest known fossils date from the Mid-Eocene period about 48 to 40 million years ago. Although about 90% of modern sponges are demosponges, fossilized remains of this type are less common than those of other types because their skeletons are composed of relatively soft spongin that does not fossilize well. The earliest sponge symbionts are known from the early Silurian. A chemical tracer is 24-isopropyl cholestane, which is a stable derivative of 24-isopropyl cholesterol, which is said to be produced by demosponges but not by eumetazoans ("true animals", i.e. cnidarians and bilaterians). Since choanoflagellates are thought to be animals' closest single-celled relatives, a team of scientists examined the biochemistry and genes of one choanoflagellate species. They concluded that this species could not produce 24-isopropyl cholesterol but that investigation of a wider range of choanoflagellates would be necessary in order to prove that the fossil 24-isopropyl cholestane could only have been produced by demosponges. Although a previous publication reported traces of the chemical 24-isopropyl cholestane in ancient rocks dating to 1,800 million years ago, recent research using a much more accurately dated rock series has revealed that these biomarkers only appear before the end of the Marinoan glaciation approximately 635 million years ago, and that "Biomarker analysis has yet to reveal any convincing evidence for ancient sponges pre-dating the first globally extensive Neoproterozoic glacial episode (the Sturtian, ~713 million years ago in Oman)". While it has been argued that this 'sponge biomarker' could have originated from marine algae, recent research suggests that the algae's ability to produce this biomarker evolved only in the Carboniferous; as such, the biomarker remains strongly supportive of the presence of demosponges in the Cryogenian. Archaeocyathids, which some classify as a type of coralline sponge, are very common fossils in rocks from the Early Cambrian about 530 to 520 million years ago, but apparently died out by the end of the Cambrian 490 million years ago. It has been suggested that they were produced by: sponges; cnidarians; algae; foraminiferans; a completely separate phylum of animals, Archaeocyatha; or even a completely separate kingdom of life, labeled Archaeata or Inferibionta. Since the 1990s, archaeocyathids have been regarded as a distinctive group of sponges. It is difficult to fit chancelloriids into classifications of sponges or more complex animals. An analysis in 1996 concluded that they were closely related to sponges on the grounds that the detailed structure of chancellorid sclerites ("armor plates") is similar to that of fibers of spongin, a collagen protein, in modern keratose (horny) demosponges such as Darwinella. However, another analysis in 2002 concluded that chancelloriids are not sponges and may be intermediate between sponges and more complex animals, among other reasons because their skins were thicker and more tightly connected than those of sponges. In 2008, a detailed analysis of chancelloriids' sclerites concluded that they were very similar to those of halkieriids, mobile bilaterian animals that looked like slugs in chain mail and whose fossils are found in rocks from the very Early Cambrian to the Mid Cambrian. If this is correct, it would create a dilemma, as it is extremely unlikely that totally unrelated organisms could have developed such similar sclerites independently, but the huge difference in the structures of their bodies makes it hard to see how they could be closely related. Fungi Choanoflagellates Glass sponges Demosponges Calcareous sponges Comb jellies Placozoa Cnidaria(jellyfish, etc.) other metazoans Plants Fungi Most demosponges Calcareous sponges Homoscleromorpha Cnidaria(jellyfish, etc.) other metazoans In the 1990s, sponges were widely regarded as a monophyletic group, all of them having descended from a common ancestor that was itself a sponge, and as the "sister-group" to all other metazoans (multi-celled animals), which themselves form a monophyletic group. On the other hand, some 1990s analyses also revived the idea that animals' nearest evolutionary relatives are choanoflagellates, single-celled organisms very similar to sponges' choanocytes – which would imply that most Metazoa evolved from very sponge-like ancestors and therefore that sponges may not be monophyletic, as the same sponge-like ancestors may have given rise both to modern sponges and to non-sponge members of Metazoa. Analyses since 2001 have concluded that Eumetazoa (more complex than sponges) are more closely related to particular groups of sponges than to other sponge groups. Such conclusions imply that sponges are not monophyletic, because the last common ancestor of all sponges would also be a direct ancestor of the Eumetazoa, which are not sponges. A study in 2001 based on comparisons of ribosome DNA concluded that the most fundamental division within sponges was between glass sponges and the rest, and that Eumetazoa are more closely related to calcareous sponges (those with calcium carbonate spicules) than to other types of sponge. In 2007, one analysis based on comparisons of RNA and another based mainly on comparison of spicules concluded that demosponges and glass sponges are more closely related to each other than either is to the calcareous sponges, which in turn are more closely related to Eumetazoa. Other anatomical and biochemical evidence links the Eumetazoa with Homoscleromorpha, a sub-group of demosponges. A comparison in 2007 of nuclear DNA, excluding glass sponges and comb jellies, concluded that: The sperm of Homoscleromorpha share features with the sperm of Eumetazoa, that sperm of other sponges lack. In both Homoscleromorpha and Eumetazoa layers of cells are bound together by attachment to a carpet-like basal membrane composed mainly of "typ IV" collagen, a form of collagen not found in other sponges – although the spongin fibers that reinforce the mesohyl of all demosponges is similar to "type IV" collagen. The analyses described above concluded that sponges are closest to the ancestors of all Metazoa, of all multi-celled animals including both sponges and more complex groups. However, another comparison in 2008 of 150 genes in each of 21 genera, ranging from fungi to humans but including only two species of sponge, suggested that comb jellies (ctenophora) are the sister group to all other lineages of Metazoa included in the sample. If this is correct, either modern comb jellies developed their complex structures independently of other Metazoa, or sponges' ancestors were more complex and all known sponges are drastically simplified forms. The study recommended further analyses using a wider range of sponges and other simple Metazoa such as Placozoa. However, reanalysis of the data showed that the computer algorithms used for analysis were misled by the presence of specific ctenophore genes that were markedly different from those of other species, leaving sponges as either the sister group to all other animals, or an ancestral paraphyletic grade. 'Family trees' constructed using a combination of all available data – morphological, developmental and molecular – concluded that the sponges are in fact a monophyletic group, and with the cnidarians form the sister group to the bilaterians. A very large and internally consistent alignment of 1,719 proteins at the metazoan scale, published in 2017, showed that (i) sponges – represented by Homoscleromorpha, Calcarea, Hexactinellida, and Demospongiae – are monophyletic, (ii) sponges are sister-group to all other multicellular animals, (iii) ctenophores emerge as the second-earliest branching animal lineage, and (iv) placozoans emerge as the third animal lineage, followed by cnidarians sister-group to bilaterians. In March 2021, scientists from Dublin found additional evidence that sponges are the sister group to all other animals, while in May 2023, Schultz et al. found patterns of irreversible change in genome synteny that provide strong evidence that ctenophores are the sister group to all other animals instead. Notable spongiologists Use A report in 1997 described use of sponges as a tool by bottlenose dolphins in Shark Bay in Western Australia. A dolphin will attach a marine sponge to its rostrum, which is presumably then used to protect it when searching for food in the sandy sea bottom. The behavior, known as sponging, has only been observed in this bay and is almost exclusively shown by females. A study in 2005 concluded that mothers teach the behavior to their daughters and that all the sponge users are closely related, suggesting that it is a fairly recent innovation. The calcium carbonate or silica spicules of most sponge genera make them too rough for most uses, but two genera, Hippospongia and Spongia, have soft, entirely fibrous skeletons.: 88 Early Europeans used soft sponges for many purposes, including padding for helmets, portable drinking utensils and municipal water filters. Until the invention of synthetic sponges, they were used as cleaning tools, applicators for paints and ceramic glazes and discreet contraceptives. However, by the mid-20th century, overfishing brought both the animals and the industry close to extinction. Many objects with sponge-like textures are now made of substances not derived from poriferans. Synthetic sponges include personal and household cleaning tools, breast implants, and contraceptive sponges. Typical materials used are cellulose foam, polyurethane foam, and less frequently, silicone foam. The luffa "sponge", also spelled loofah, which is commonly sold for use in the kitchen or the shower, is not derived from an animal but mainly from the fibrous "skeleton" of the sponge gourd (Luffa aegyptiaca, Cucurbitaceae). Sponges have medicinal potential due to the presence in sponges themselves or their microbial symbionts of chemicals that may be used to control viruses, bacteria, tumors and fungi. Lacking any protective shell or means of escape, sponges have evolved to synthesize a variety of unusual compounds. One such class is the oxidized fatty acid derivatives called oxylipins. Members of this family have been found to have anti-cancer, anti-bacterial and anti-fungal properties. One example isolated from the Okinawan Plakortis sponges, plakoridine A, has shown potential as a cytotoxin to murine lymphoma cells. See also References Further reading External links |
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