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how would zimbabwe reintroduce its own currency	At the moment they've introduced bond coins which can only work in Zimbabwe as time goes they'll keep increasing the denominations until there's proper Zimbabwean currency then they'll ban foreign currency for selling in stores I think	[ "On February 2, 2009 a final denomination was implemented, cutting 12 zeroes, before the Zimbabwe dollar was officially abandoned on April 12, 2009. Pending economic recovery, Zimbabwe relied on foreign currency rather than introducing a new currency.\n", "In October 2005, the head of the Reserve Bank of Zimbabwe...
Why did Jimmy Carter, a Democratic candidate, win so many Southern states in the 1976 election?	Carter was from Georgia, and the South had voted Democrat from the end of Reconstruction until 1968.	[ "Carter won a majority of the popular and electoral vote. He carried most states in the South and the Northeast while Ford dominated the Western states. Carter remains the only Democratic candidate since 1964 to win a majority of the Southern states. Ford won 27 states, the most states ever carried by a losing cand...
what makes someone a polyglot? is it something about the brain, or simply a learning technique that anyone can do?	It's just hard work and dedication. The more languages you know, the easier it is to learn new languages. The earlier you start studying, the sooner you can start practicing, the sooner you can achieve mastery. It's like any field of study. Just hard work and practice.	[ "In Chomsky's opinion, in order for a linguistic theory to be justified on \"internal grounds\" and to achieve \"explanatory adequacy\", it has to show how a child's brain, when exposed to primary linguistic data, uses special innate abilities or strategies (described as a set of principles called \"Universal Gramm...
why won't any of the arab nations take in and help the "palestinians"?	I'm not sure why you've got Palestinians in scare quotes. It suggests that you're not asking this question in good faith. However, I'll assume it's just a peculiar way of asking the question. As for the Arab states, Egypt, Jordan and Lebanon all contain large numbers of Palestinian refugees and have done since the 1940...	[ "No Arab country except Jordan has to date assimilated a significant population of Palestinian refugees, nor given them full citizenship, and many rely on economic aid from the UN or persons in other countries. It is the position of most Arab governments not to grant citizenship to the Palestinian refugees born wit...
Why does the Barrow Alaska have 15 more days where the sun does not set than rise?	In addition to the other answers, this is partially explained by how sunrise and sunset are defined. Sunrise is the moment the Sun's upper edge appears over the horizon, and similarly, sunset is the instant when its last visible sliver disappears below the horizon. Thus, when the Sun only partially dips below the hor...	[ "The sun remains below the horizon during the polar night from about 26 November to 15 January, but owing to the mountains, the sun is not visible from 21 November to 21 January. The return of the sun is an occasion for celebration. However, because of the twilight, there is some daylight for a couple of hours even...
in american high school, i learned virtually nothing at all about african or south american history. why isn't it part of the world history curriculum?	* Did you learn about the Phoenicians, Carthaginians, or Egyptians? Because those are in Africa. * A world history course in any country is going to tend to focus on the history relevant to that country. For the US, that is Greece- > Rome- > Europe- > America. * There is only so much you can fit into a high school le...	[ "The next chapter, “Political Education Neglected,” begins with some examples as to how African Americans have been previously kept from learning about American politics, one example being when a bill that would print the Constitution of the United States in all schools was turned down because “it would never do to...
how do elites hide money successfully behind 'front' companies established in other countries?	So the first thing to understand is that a corporation is an independent legal entity from its owners. So let's say I own a successful construction company. I make around $10,000,000 in profit every year. Now, I own a big company but I don't need that kind of money to live day to day. My expenses total only ("onl...	[ "Elite capture is a form of corruption whereby public resources are biased for the benefit of a few individuals of superior social status in detriment to the welfare of the larger population. Elites are groups of individuals who, because of self-ratifying factors such as social class, asset ownership, religious aff...
why are car engine idles not lower?	I had a car that had problems with the idle adjustor. The engine would drop to 300-400 and would shake the whole car. I believe 800-1000 RPM is to keep the car from stalling as well as to keep the car from shaking. Although, I did own a car for a bit that would actually shut the engine off while stopped and in neutra...	[ "Idle speed (or idle) is the rotational speed an engine runs at when the engine is idling, that is when the engine is uncoupled from the drivetrain and the throttle pedal is not depressed. In combustion engines, idle speed is generally measured in revolutions per minute (rpm) of the crankshaft. At idle speed, the e...
how does apple slows down its phones?	A process in the background regularly checks the battery capacity, when it goes down a certain threshold set by Apple, that process kicks in and underclocks the CPU of the phone to 600 Mhz IIRC, so that means a slower phone but a slightly better battery life and prevents most unexpected shutdowns.	[ "In December 2017, there were reports that Apple has been using a policy of slowing down the speed of its older iPhones when issuing operating system upgrades. It has spurred allegations that the firm has been using this as a tactic to prompt users of older iPhones to buy newer models.\n", "In late 2017, users of...
why is poor vision so much more prevalent across all age groups than other types of sensory loss, and why is it not viewed as a disability while others are?	My guess; vision is our most important sense. No one gets hearing aid if their left ear hears 10% less than the right, but if the left eye is 10% off-center... On the other hand i think a lot of kids get glasses when they dont really need it. Parents are easy to sell to. I know i didn't need glasses, and stopped wearin...	[ "Visual impairment has the ability to create consequences for health and well being. Visual impairment is increasing, especially among older people. It is recognized that those individuals with visual impairment are likely to have limited access to information and healthcare facilities, and may not receive the best...
Why doesn't the human iris produce a red color?	Do you mean why aren't there red-eyed people? Simple: There are two pigment proteins in humans, eumelanin (black) and pheomelanin (reddish). Usually people have more eu- than pheomelanin. In the iris, if you have mostly eumelanin the eye will look brown. If you have a lot less eumelanin, the eye might look hazel - wit...	[ "The iris is usually strongly pigmented, with the color typically ranging between brown, hazel, green, gray, or blue. Occasionally, the color of the iris is due to a lack of pigmentation, as in the pinkish-white of oculo-cutaneous albinism, or to obscuration of its pigment by blood vessels, as in the red of an abno...
how intelligent were prehistoric humans?	They were as intelligent as we are now. What they were able to expend that intelligence on was limited by a lack of knowledge, not cognitive ability.	[ "The main observations drawn by Wilson are that our ancient pre-\"Homo sapiens\" ancestors possessed intelligence equal to that of modern man, their apparent lack of technological achievement being explained by the needlessness of it based on their completely different, intuitive and all-embracing mentality. Over t...
Is there a material that can absorb air or a specific kind of gas?	Well, they _all_ do, to some extent. All molecules attract, if only weakly. (though 'weakly' here can mean "so weak that the molecules won't 'stick' at a temperature higher than a fraction of a Kelvin") More surface area means more adsorption, it was actually over 200 years ago they discovered that charcoal, which is ...	[ "The materials can produce gas by several mechanisms. Molecules of gases and water can be adsorbed on the material surface (therefore materials with low affinity to water have to be chosen, which eliminates many plastics). Materials may sublimate in vacuum (this includes some metals and their alloys, most notably c...
why do soda contents not drop/settle to the bottom and need to be mixed up or stirred but other drinks like juice do?	Juice has solids in suspension. They're not actually chemically dissolved, just "stuck" in the water molecules like a microscopic ball pit. Over time they'll settle to the bottom. Soft drinks don't have that many ingredients, and the few they do have are water soluble. Unlike the suspended solids in juice, these ch...	[ "The gas pressure in a siphon drives soda water up through a tube inside the siphon when a valve lever at the top is depressed. Commercial soda siphons came pre-charged with water and gas, and were returned to the retailer for exchange when empty. A deposit scheme ensured they were not otherwise thrown away.\n", ...
'magic underwear' worn by mormons	Mormons believe that certain ordinances must be completed in order to enter the highest kingdom of heaven. One of those ordinances is called an endowment. It takes place in their temples. During an endowment worthy members are gifted certain signs and symbols needed to enter heaven. There are distinct markings on the g...	[ "A temple garment, also referred to as garments, the garment of the holy priesthood, or Mormon underwear, is a type of underwear worn by adherents of the Latter Day Saint movement after they have taken part in the endowment ceremony. Garments are worn both day and night and are required for any adult who previously...
why orgasms become more intense the more you have in a row? does this apply to all sexes?	This ain't funny OP. We know you girls have it good, no need to rub it in.	[ "Orgasm, or sexual climax, is the sudden discharge of accumulated sexual tension during the sexual response cycle, resulting in rhythmic muscular contractions in the pelvic region characterized by an intense sensation of pleasure. Women commonly find it difficult to experience orgasms during vaginal intercourse. Ma...
interlaced display vs noninterlaced (progressive scan) display	Picture a paper notebook with lined paper. You are going to make a cool flipbook animation with it. On the first page, start at the top line and draw your picture on every other line down the page. On the second page, start at the second line and draw your picture on every other line down the page. On the third pag...	[ "Progressive scanning (alternatively referred to as noninterlaced scanning) is a format of displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence. This is in contrast to interlaced video used in traditional analog television systems where only the odd lines, th...
how do subways not collapse?	You can think of it as like a pipe, only with a tunnel the pressure is on the outside of the pipe instead of on the inside. Just as the walls of a pipe need to be made strong enough to hold the pressure in the pipe without bursting, the walls of a subway tunnel need to be designed to take the pressure of the dirt and ...	[ "Subway stations and tunnels are designed to resist ground shaking that could occur at a specific location, but there is no general magnitude of earthquake that the entire system is expected to withstand. The Metro Rail system has not suffered any damage due to earthquakes since its opening in 1993.\n", "The stat...
what is an interface in programming?	An interface is basically a class with no implementation that is intended to be subclassed so that a related set of classes all share a common set of methods. This lets you program parts of your code in a way where you don't have to worry about which of the subclasses you're working with, and anyone else using your cod...	[ "In computer programming, a function is, in general, a piece of a computer program, which implements the abstract concept of function. That is, it is a program unit that produces an output for each input. However, in many programming languages every subroutine is called a function, even when there is no output, and...
how are you supposed to know who to believe in political debates when both candidates just accuse the other of lying the whole time?	You could try doing your own research and coming to your own conclusions. This "thinking for yourself" is often superior to taking the word of people who are trying to persuade you of something that directly benefits them. Tasks such as essays or research projects during the various stages of formal schooling is intend...	[ "Political debate often abuses public confidence by one candidate attempting to sway voters, not by logical argument on given issues, but by personal diatribe that does not directly bear on the matter at hand.\n", "One experimental study found that fact-checking during debates affected viewers' assessment of the ...
What was the woman's role in Viking society, particularly but not limited to when men were out on conquest?	Jenny Jochens wrote the definitive treatise on women in Old Norse society in her creatively named, Women in Old Norse Society, where she examined what could be gleaned about approximately half of the human population in Scandinavia (though she focuses almost entirely on Iceland), from a few select texts including sag...	[ "The legal, civilian and cultural status of women in prehistoric society during the Stone Age, Bronze Age and Iron Age in Scandinavia are somewhat obscure, but from Viking Age sources we know that women were relatively free, compared to men, contemporary societies and the later Middle Ages. \n", "Women enjoyed a ...
when a dog or a cat's owner changes clothes or wears something out of the ordinary, do they think the attire is part of your body or can they tell that clothes are just something that we put on top of our bodies?	She probably realised you were the same person, but your hat scared or confused her. It's hard to know what animals actually think, but whatever they do think, they get used to it. Animals go by more than just visual appearance, of course: smell, gait, voice -- all these are important. Your puppy can probably already ...	[ "The appearance of a dog reflects the status of the owner: dressing a dog is more about the owner than the animal. When an owner dresses up their dog they establish a unique bond with the dog that places them at an even more personal and intimate level.\n", "Dog Clothing is a garment made by humans for their cani...
When American troops liberated Dachau, they were so enraged that they summarily executed dozens of SS guards. Did similar events happen at other concentration camps?	I don't know about Allied soldiers killing guards at other camps, but liberated inmates killed guards at Bergen-Belsen, Buchenwald and Gusen-Mauthausen. I am sure it happened in other camps as well but these are the ones I have read about. You can read the accounts here: Rudolf A. Haunschmied et al (2007) St. Georg...	[ "An Inspector General report resulting from a US Army investigation conducted between 3 and 8 May 1945 and titled, \"American Army Investigation of Alleged Mistreatment of German Guards at Dachau,\" found that 21 plus \"a number\" of presumed SS men were killed with others being wounded after their surrender had be...
what actually happens in our brain when we experience a heartbreak?	It works very similarly to withdrawal. I'm not a psych major and I can't get into all the chemicals involved in the process but I know that being in love is, to your mind at least, much like being on drugs (I think one study even showed that being in love activates the same parts of your brain as cocaine?). It activate...	[ "In severe cases, the depression of a broken heart can create a sustained type of stress that constitutes an emotional trauma which can be severe enough to leave an emotional imprint on individuals' psychobiological functioning, affecting future choices and responses to rejection, loss, or disconnection. A contribu...
Was there any international outcry over the American coup in Hawaii and annexing it?	Just to start with the very last bit of the last question, there were Japanese internment camps on Hawaii. If you read a bit on [the Hawaiian internment](_URL_0_), you might get a better sense of the context informing the rest of your question. An excerpt from that page: > Given its strategic location in the...	[ "Following the overthrow of the Kingdom of Hawaii, the forces behind the coup established the Provisional Government but with the hope of a speedy annexation by the United States. The provisional government sent a commission including Lorrin A. Thurston to the United States and negotiated a treaty with President Be...
why does dental pain feel worse when lying down?	Your blood pressure increases in your head when you're horizontal.	[ "Non-dental sources of pain often cause multiple teeth to hurt and have an epicenter that is either above or below the jaws. For instance, cardiac pain (which can make the bottom teeth hurt) usually radiates up from the chest and neck, and sinusitis (which can make the back top teeth hurt) is worsened by bending ov...
In the Revolutionary War, how did British troops lose Boston so quickly when they had an iron hold over New York?	The answer is actually fairly straight forward. The Continental Army managed to get artillery on the Dorchester heights above the city. Henry Knox and his men hauled them overland from Fort Ticonderoga to Boston. The position of the guns threatened the Navy in the harbor and was above the range of heavy guns on the shi...	[ "The major event in the Boston area in the first year of the American Revolution was the Siege of Boston from 19 April 1775 to 17 March 1776. The Continental Army under George Washington besieged British forces in the city. The British built several forts as a result, notably on Governor's Island and Noddle's Islan...
why are bricks stacked the way they are rather than just one directly on top of the other?	By staggering them the weak grout seams are minimized in the vertical direction, making the wall somewhat stronger.	[ "Bricks may also be classified as \"solid\" (less than 25% perforations by volume, although the brick may be \"frogged,\" having indentations on one of the longer faces), \"perforated\" (containing a pattern of small holes through the brick, removing no more than 25% of the volume), \"cellular\" (containing a patte...
Are people with Congenital Insensitivity to Pain (CIP) unable to feel emotional pain in the same way they are unable to feel physical pain?	[Congenital analgesia](_URL_0_) is a disorder of the peripheral nervous system where the sodium channels in nociceptor cells have a mutation. So it’s an issue with the sensory input, not with the brain’s ability to process pain. Also, can you link the Eisenberger study? I’m curious how emotional pain was operationall...	[ "Young individuals who have callous and unemotional traits (CU) exhibit an overall lack of empathy. It has been thought that if a person experiences pain empathy they will be less likely to hurt others, since people that experience pain empathy have distress when another person is hurt.\n", "There is evidence tha...
the ellen show keeps showing "psychics." what makes it all bullshit?	The fact that psychics can't do what they say they can do is what makes it all bullshit.	[ "It is the opinion of scientific skeptics that mediumship is a con, and that what is portrayed in this TV show is no exception. After initially publicizing the local show, Onward State published an article, \"Psychic Mediums Like Monica Ten-Kate Are Lying Frauds: A Retraction\", which provided a detailed critique o...
Do gravitational waves really all travel at the same speed?	From a bosonic point of view, the gravitational field quanta must be massless due to the infinite range of its force. It's harder to answer the question of speed in terms of stress-energy tensors (due to gravity being a specific geometry) but gauge field theory suggests that all massless particles (bosons/fermions) all...	[ "In October 2017, the LIGO and Virgo detectors received gravitational wave signals within 2 seconds of gamma ray satellites and optical telescopes seeing signals from the same direction. This confirmed that the speed of gravitational waves was the same as the speed of light.\n", "Gravitational waves exist and tra...
Is the form of a galaxy influenced by the black hole in its middle?	There are many things that determine the morphology of a galaxy, one of them being the black hole at its core. There is a well known relationship between the mass of the black hole and the mass of a galactic bulge- namely a spherical conglomeration of stars in the middle of the Galaxy. Black hole mass is correlated wit...	[ "The inner nucleus of this galaxy displays a rise in stellar orbital motion that indicates the presence of a central dark mass. The best fit model for the motion of molecular gas in the core region suggests there is a supermassive black hole with about (450 million) times the mass of the Sun. This is the first obje...
why does cold water make razor blades last longer?	First of all, are we sure that this isn't just an urban legend? That said, I can think of an idea: hot tap water contains more minerals, which can either deposit crud on the blade, or corrode it.	[ "Safety razors are usually made of razor steel which is a low chromium stainless steel which can be made extremely sharp, but corrodes relatively easily. Safety razor life may be extended by drying the blades after use. Salts from human skin also tend to corrode the blades, but washing and carefully drying them can...
what the us holds against the palestinian state?	Well as usual with a question potentially related to the Israel Palestine conflict there are at least two answers to provide if we intend to be "textbook fair" I suppose the answer one would get from an American or Israeli official is that the USA doesn't have any problem with Palestine as long as Palestine respects Is...	[ "A report Palestinian Media Watch presented to the United States House Committee on Foreign Affairs in 2008 indicated that the Palestinian Authority was engaging with enemies of the United States on a shared platform of hatred toward the U.S. The report argued that under such circumstances the creation of an indepe...
how do gut bacteria actually make it to your intestines with the hydrochloric acid produced by the stomach in the way?	The hydrochloric acid in your stomach is usually heavily diluted in the first place, and only long-term exposure can erode their membrane away. Most, however, reside in your gut lining, which has a nice, thick layer of mucus to protect then from your stomach fluids. Some of the mucus gets washed down when the contents ...	[ "Intestinal bacteria convert the conjugated bilirubin that is excreted by the bile duct into the intestine into urobilinogen and stercobilinogen. Part of the urobilinogen is reabsorbed in the intestine then circulated in the blood to the liver where it is excreted. A small part of this recirculated urobilinogen is ...
If we were in a nearby star system, would SETI be able to detect our radio waves?	If we take some directed emissions in the right direction and assume we are lucky to look in the right direction at the right wavelength at the right time, we could detect "ourselves" over something like tens of light years, maybe a bit more if we are really lucky. There are about 2000 stars less than 50 light years aw...	[ "In October 2015, the SETI Institute used the Allen Telescope Array to look for radio emissions from possible intelligent extraterrestrial life in the vicinity of the star. After an initial two-week survey, the SETI Institute reported that it found no evidence of technology-related radio signals from the star syste...
What does 'locality' mean in terms of quantum physics?	As is often the case in physics, locality is a concrete mathematical property which is always going to lose some accuracy/correctness when expressed in words and qualitatives, as physics is at its core nothing but a quantitative mathematical model. So I don't know if one can express locality in a "100%-no-math" way wh...	[ "The word locality has several different meanings in physics. For example, in quantum field theory \"locality\" means that quantum fields at different points of space do not interact with one another. However, quantum field theories that are \"local\" in this sense \"appear\" to violate the principle of locality as...
the point of volts, amps, ohms, etc...	Amps, ohms, and volts are all related to each other through the equation V = IR. r stands for resistance (measured in ohms), I stands for current (amps) and v for voltage (volts). If you increase voltage, your resistance or current must decrease proportionally to match, and so on for any other changes within a circuit....	[ "The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force. It is named after the Italian physicist Alessandro Volta (1745–1827).\n", "The ampere ( or (UK), symbol: A), often shortened to \"amp\", is the base unit of electric current in the I...
what do the numbers for my eye prescription mean. for example, my left eye is -6.0 and my right is -5.75	The number is a measure of the optical power of the lenses in dioptres (the reciprocal of the focal length in meters). Essentially a positive number increases the optical power of your eye (which corrects for farsightedness) and a negative number decreases the optical power of your eye (which corrects for nearsightedne...	[ "The largest letter on an eye chart often represents an acuity of 6/60 (20/200), the value that is considered \"legally blind\" in the US. Some individuals with moderate myopia may not be able to read the large E without glasses, but have no problem reading the 6/6 (20/20) line or 6/4.5 (20/15) line with glasses. B...
us army camouflage	Look at the camoflage on a zebra. They're black and white striped. The grass/environment they live in isn't black and white, its mainly yellow. You'd be surprised how difficult to spot they can be though! The point of camoflage isn't to make you look exactly like the background, but to break up your body shape/silouet...	[ "Operational Camouflage Pattern (OCP), originally codenamed Scorpion W2, is a military camouflage pattern adopted in the mid-2010s by the United States Army for use as the U.S. Army's main camouflage pattern on uniforms. This pattern is in the process of replacing the U.S. Army's previous Universal Camouflage Patte...
Why was Pompey described as 'the new Alexander the Great'?	Pompey certainly earned the comparison to Alexander, especially with the Pirate Command, but the title "the Great" popped up very early and in a not exactly flattering way. When Sulla returned from his war against Mithridates in the East (82 BCE), he marched from Brundisium north to Rome, displacing the generals of (t...	[ "Alexander earned the epithet \"the Great\" due to his unparalleled success as a military commander. He never lost a battle, despite typically being outnumbered. This was due to use of terrain, phalanx and cavalry tactics, bold strategy, and the fierce loyalty of his troops. The Macedonian phalanx, armed with the s...
Happy New Year! As it is now 2014, the outward limit of the 'twenty-year rule' in AskHistorians has ticked ahead once more -- let's talk about 1994.	1994 was a good year for movies. Pulp Fiction, Forrest Gump, The Shawshank Redemption, Leon: The Professional and Lion King came out that year.	[ "BULLET::::- \"18 Months\" re-entered the top 10 at number 7 on 5 January 2013 (week ending) for 7 weeks, at number 8 on 4 May 2013 (week ending) for 2 weeks, at number 8 on 27 July 2013 (week ending) and at number 8 on 24 August 2013 (week ending) for 2 weeks.\n", "BULLET::::- \"18 Months\" re-entered the top 10...
why do cameras “freak out” when they are recording someone with a striped pattern on their clothing?	I'm not sure what you mean, exactly. If you're talking about that trippy pattern that shimmers and moves over a striped pattern as the camera moves, that's a [Moiré pattern](_URL_0_). It's a sort of optical illusion that happens when you look at a striped pattern through some material that is also striped, and the stri...	[ "Photographs of a TV screen taken with a digital camera often exhibit moiré patterns. Since both the TV screen and the digital camera use a scanning technique to produce or to capture pictures with horizontal scan lines, the conflicting sets of lines cause the moiré patterns. To avoid the effect, the digital camera...
Is there a limit with telescopes?	The biggest intrinsic limitation of a telescope's resolving power is the angular resolution that its optical components are capable of. The [angular resolution](_URL_0_) is the smallest angular distance between two sources of light, for which the system will see two distinct sources rather than one blob. In principle t...	[ "For large ground-based telescopes, the resolution is limited by atmospheric seeing. This limit can be overcome by placing the telescopes above the atmosphere, e.g., on the summits of high mountains, on balloon and high-flying airplanes, or in space. Resolution limits can also be overcome by adaptive optics, speckl...
Is it worth it to get higher quality gas?	Higher octanes don't exist because they are "better". They are just different. You should use the octane that is recommended for your engine, which it will say in your manual. Using a higher octane fuel than what is recommended for your engine won't be beneficial. source with more detail: _URL_0_	[ "The impurities need to be removed before this lower-quality crude can be refined into petrol, thereby increasing the cost of processing. This results in a higher-priced gasoline than that made from sweet crude oil. \n", "Sales of gas liquids were seldom difficult because of their ready use in oil refining. Refin...
Is it true that the bible was not translated into different langauges for most of the middle ages?	As Frans van Liere succinctly puts it in An Introduction to the Medieval Bible (Cambridge 2014), > Contrary to popular perception, there was no blanket prohibition against biblical translation in the vernacular in the middle ages. (p 203) I've [written on this subject a bit before](_URL_0_), the relevant part he...	[ "The Latin Vulgate was dominant in Western Christianity through the Middle Ages. Since then, the Bible has been translated into many more languages. English Bible translations also have a rich and varied history of more than a millennium.\n", "The most notable Middle English Bible translation, Wycliffe's Bible (1...
Did historians know of Tutankhamun before the discovery of his tomb?	Carl Richard Lepsius, an German Egyptologist who was in Egypt 1843-46 on a scientific expedition, and documented well it with hundreds of line drawings of incriptions, papyrii, maps etc. in Denkmaeler aus Aegypten und Aethiopien, an outstanding work, still relevant to this day as there are many incriptions that has b...	[ "Theodore M. Davis's team uncovered a small site containing funerary artifacts with Tutankhamun's name and some embalming parts in 1907, just before his discovery of the tomb of Horemheb. Davis erroneously assumed that this site was Tutankhamun's complete tomb and concluded the dig. The details of both findings are...
Why was Russia never able to build a great automobile industry?	Some clarification in this question is needed here. Are you asking why the Soviet Union did not create its own automobile industry or are you inquiring about the automobile industry of the Russian federation after the breakup of the USSR? The answers to either question are going to be very different and in the latter...	[ "However, another automotive manufacturing project of late 1920s & early 30s – the GAZ plant, built with the assistance of Ford Motor Company – proved to be a success, with a designed capacity to produce up to 250...300 thousand cars and trucks annually. The use of a readily available foreign technology allowed Rus...
why do presidents seem to dissappear from politics after their term ends?	US President is the highest office in the nation. Once you've been President, you can command many thousands of dollars in speaking fees, you can open your library, you can publish your memoirs and make more money, you receive a pension of $200,000 per year - why would you want to stay in politics? Anyways, they don'...	[ "A president elected to a second term is sometimes seen as a lame duck from early in the second term, since term limits prevent them from contesting re-election four years later. However, not personally having to face the electorate again makes a second-term president more powerful than they were in their first ter...
the ending of the movie 2001: a space odyssey	Here it is straight from the mouth of the director: _URL_0_ GELMIS: The final scenes of the film seemed more metaphorical than realistic. Will you discuss them -- or would that be part of the "road map" you're trying to avoid? > KUBRICK: No, I don't mind discussing it, on the lowest level, that is, straightforw...	[ "2001: A Space Odyssey is a 1968 epic science fiction film produced and directed by Stanley Kubrick. The screenplay was written by Kubrick and Arthur C. Clarke, and was inspired by Clarke's short story \"The Sentinel\". An , written concurrently with the screenplay, was published soon after the film was released. T...
how people are so distracted from space exploration and technologies?	There are many, many interesting things in the world. Space exploration is just one of them. Lots of very clever people are busy working on different problems. The majority of the population, though, just isn't interested in science and space, and would rather sit at home watching soap operas. As for the few people l...	[ "BULLET::::- \"Yoshio Itagaki makes us aware of a shift in public attitude toward space science and exploration that you might not have noticed, because it occurred gradually. Thirty years ago, space travel was still adventurous and even heroic. Now it's so routine that we hardly notice when a space shuttle takes o...
What effect did the Nuremberg trials have on the U.S. Supreme Court during that period?	They heard cases without him, using the same procedures for cases when a justice recuses him/herself. For instance, Girouard v. United States (1946) was argued and decided (5-3) without Jackson's participation since he missed the entire October 1945 term. I don't have a list of cases from that term, but Supreme Court d...	[ "The Nuremberg Trials were a series of military tribunals, held by the victorious Allied forces of World War II, most notable for the prosecution of prominent members of the political, military, and economic leadership of the defeated Nazi Germany.\n", "The Nuremberg trials () were a series of military tribunals ...
Since pi is and irrational number, it goes on forever. How do we know the sequence of pi beyond what current technology computes?	Here's an algorithm that can compute the n-th digit of pi without computing the preceding digits. [_URL_0_](_URL_1_)	[ "Pi certainly seems to behave this way. In the first six billion decimal places of pi, each of the digits from 0 through 9 shows up about six hundred million times. Yet such results, conceivably accidental, do not prove normality even in base 10, much less normality in other number bases.\n", "In August 1995, the...
why are the conservative republicans afraid of the the tea party republicans?	For several years now the Republican Party has been dividing into two groups, Establishment and Tea Party (it's a bit of an oversimplification, but it gets the point across). The Establishment is guys like John McCain, John Beohner, etc. that have money, power, sat on the Hill for a while, and like the way they do busi...	[ "The party mood was glum in 2013 and one conservative analyst concluded: It would be no exaggeration to say that the Republican Party has been in a state of panic since the defeat of Mitt Romney, not least because the election highlighted American demographic shifts and, relatedly, the party's failure to appeal to ...
what causes the occasionally visible electricity when you plug things in?	If the thing you're plugging in draws a lot of current, then there will be a brief spark where there's enough connection to transfer electricity but there's not enough metal-metal contact to make it a efficient, low resistance connection. The metal right at the connection point gets hot and you get a little bit of a s...	[ "Because the surface of the material is now electrically charged, either negatively or positively, any contact with an uncharged conductive object or with an object having substantially different charge may cause an electrical discharge of the built-up static electricity: a spark. A person simply walking across a c...
Is the average life expectancy thought to cap off at some point?	Some say that average longevity and outlier maximal longevity can grow indefinitely with future technology. I think it would be foolish to predict that eventual scientific discoveries cannot find ways to repair and replace body parts allowing extraordinary longevity. Already we do see evidence for an increase in outl...	[ "Some of the authors of the 2004 UN report say that life expectancy is assumed to rise slowly and continuously. The projections in the report assume this with no upper limit, though at a slowing pace depending on circumstances in individual countries. By 2100, the report assumed life expectancy to be from 66 to 97 ...
What population impacts were observed from adding iodine to table salt?	The sudden bioavailability of normal iodine levels in some individuals with chronic iodine deficiency and the resultant nodular goiter caused overproduction of thyroxin leading to hyperthyroidism – a condition called iodine-induced thyrotoxicosis. There is a downloadable version of the paper at [this link](_URL_0_).	[ "A 2017 study found that the introduction of iodized salt in 1924 raised the IQ for the one-quarter of the population most deficient in iodine. These findings \"can explain roughly one decade’s worth of the upward trend in IQ in the United States (the Flynn effect)\". The study also found \"a large increase in thyr...
why don't they put high quality microphones/speakers in air planes? i've never been able to hear what the pilot is saying clearly.	A couple reasons: 1) Financial - If the current stuff works "well enough" that information is communicated between the tower and the plane, then it's enough to hear "Brace for impact" or something similar. 2) Noise! - Airplanes vibrate...a lot. The vibrations cause the microphones and speakers to become somewhat dis...	[ "Microphones that work much like a stenomask are used by aircraft ground crews to communicate with cockpit crews in airport environments with extreme engine noise, and are usually part of their headsets.\n", "In aviation audio systems the loudness of the sidetone heard in a helmet or headset may be adjusted to su...
how the does a printer work?	There are a few different ways printers work. Ink jet printers work by placing small drops of ink onto the paper. That's why when you print something like a color photo that the paper seems a bit damp when it comes out of the printer. Laser printers work on a principal of static electricity. An actual laser shines ...	[ "The printer commences by drawing a length of cloth, from the roll, over the table, and marks it with a piece of coloured chalk and a ruler to indicate where the first impression of the block is to be applied.\n", "A print server, or printer server, is a device that connects printers to client computers over a ne...
why are drugs that have no recreational use, such as a drug that you would get to treat a sinus infection, only available through prescription.	Im guessing youre talking about antibiotics. It would become a real issue if anyone at anytime could buy antibiotics when they have the sniffles. You see antibiotics ONLY work against bacteria, so if you dont have a bacterial infection they would be useless. Now it wouldnt be an issue if you were swallowing antibiotics...	[ "Treatment with drugs that are extracts or synthetic variants of cannabis are not legal to use in health care with one small exception. Nabiximols, trade name Sativex, a cannabinoid oromucosal mouth spray, was approved in December 2011, for multiple sclerosis (MS); only on prescription as a third alternative to two...
why is their so much abuse on online gaming?	One of the key factors is anonymity, just the fact that nobody knows you, unless you are playing with friends. People are much more likely to lash out at people and even verbally attack them when they know the other person more than likely can't do anything about it. It's even a way for shy people to become, at least s...	[ "A further issue that can occur through gaming is online harassment or bullying behaviors. A specific example of harassing behavior occurring within a game can be found in Xbox Live services. With its online chat and party system, this leaves the service open to unwanted harassment, trolling, or bullying to occur b...
why are many important historical artefacts locked away and rarely displayed even though they are very well protected (climate control boxes etc)?	The space to safely display important artifacts is much smaller than would be required to display all the archived artifacts. It's just too expensive to put everything on display and take care of it.	[ "Museum storage conditions are meant to protect the object and to minimize any deterioration. This often means keeping objects in a stable climate, preventing exposure to pests, minimizing any handling, and using only archival materials that will not deteriorate or harm the objects. Object safety also include provi...
In the middle ages did people really have gold coins?	The mainstay of the early medieval English economy wasn't gold, but rather the silver penny. Gold coins did exist, but they were largely symbolic propaganda pieces like the [gold mancus of Ceolwulf](_URL_0_), one of only eight extant gold coins from prior to 1250. The mancus was part of a wider issue but one that...	[ "Gold coins were rarely minted in early medieval Western Europe, up until the later 13th century; silver and bronze were the metals of choice for money. Gold coins were almost continually produced by the Byzantines and medieval Arabs. These circulated in Western European trade in smallish numbers, originating from ...
why is there a border crossing between hong kong and china since the british relinquished to the people's republic on china in 1997?	Hong Kong is considered a "special economic zone" by the Chinese government. Things which are illegal in China are often legal in Hong Kong. This legal barrier is somewhat of a propaganda problem for the Chinese government, as the special economic zones (Macau is also one) are in general more prosperous than most of th...	[ "The border between Hong Kong and mainland China was not regulated for over 100 years after establishment of the colony. Border controls did not exist until 1950, after communist victory in the Chinese Civil War. Although the border was guarded, the Hong Kong government was relatively lax on deporting illegal immig...
how large corporations recover once they have been infected by ransom ware.	Any corporation with a competent IT department does regular system-wide backups on a daily basis. They also have a disaster recovery plan that allows them to stand up new instances of their critical systems on short notice. And sometimes, they just pay the ransom. They routinely put thousands of dollars worth of sof...	[ "In January 2016, Malwarebytes unveiled Malwarebytes Endpoint Security, advanced anti-ransomware technology which is described as the \"first solution to offer multiple layers of protection against unknown ransomware\". The company sponsored a survey with Osterman Research into 540 firms in the United States, Unite...
Do we have any surviving primary sources from ancient rome?	First off I assume you mean primary “written” sources since you refer to copying. Non-written primary sources would include paintings, mosaics, architecture, statues all of which have are essential primary sources to understanding the the ancient world. Primary written sources from antiquity are everywhere: inscrip...	[ "Ancient historians' accounts of the history of Rome before it was destroyed by the Gauls in 390 BC are regarded as highly unreliable by modern historians. Livy, the main surviving ancient source on the early period, himself admits that the earlier period is very obscure and that his own account is based on legend ...
How has the "choreography" of opera changed?	Cool question! This is one of those aspects of opera that’s not too popular to write about actually, now with scholars, or then with contemporaries. You’ll get contemporary opera viewers writing things like Farinelli can’t act, or that Gaetano Guadagni is a beautiful actor, but no one bothers to mention what on earth m...	[ "Concert dance, like opera, generally depends for its large-scale form upon a narrative dramatic structure. The movements and gestures of the choreography are primarily intended to mime the personality and aims of the characters and their part in the plot. Such theatrical requirements tend towards longer, freer mov...
How are Bi Elliptical Transfers More Efficient Than Hohmann Transfers?	[This past answer](_URL_1_) by /u/ThePsuedoMonkey might help: > Think of an orbit as an energy system; at periapsis your orbital velocity is the highest (high kinetic energy) while at apoapsis your elevation is the highest (high potential energy), so a higher orbit requires more energy to get to. The Bi-Elliptic tra...	[ "BULLET::::- A bi-elliptic transfer can require less energy than the Hohmann transfer, if the ratio of orbits is 11.94 or greater, but comes at the cost of increased trip time over the Hohmann transfer.\n", "As coenzyme Q is reduced to ubiquinol on the inner side of the membrane and oxidized to ubiquinone on the ...
Suppose I'm falling at terminal velocity with a large object near me. I positioned myself on top of said object and pushed up with my legs as hard as I can before hitting the ground. Under what parameters would I survive the fall?	Let's say you're falling on top of the object. In the reference frame of the object, you jump and give yourself a vertical speed of 4 meters per second. Then consider the reference frame of the ground. Instead of crashing at 50 m/s, you crash at 46 m/s, and are still dead.	[ "BULLET::::- Terminal velocity (An object dropped through air from a sufficient height will reach a steady speed, called the terminal velocity, when the aerodynamic drag force pushing up on the body balances the gravitational force (weight) pulling the body down.)\n", "Technically, an object is in free fall even ...
[meta] A modest proposal to further improve this subreddit.	This is indeed a great community, but it feels like it could use an additional moderator, perhaps. There's an enormous backlog in the tag application process (as Daeres notes in his comment already), and having the tags isn't exactly useful if nobody new can get them.	[ "Online discussion platforms may be designed and improved to streamline discussions for efficiency, usefulness and quality. For instance voting, targeted notifications, user levels, gamification, subscriptions, bots, discussion requirements, structurization, layout, sorting, linking, feedback-mechanisms, reputation...
why do two transits of venus occur every hundred or so years, but the transits of mercury occur more frequently than venus?	Mercury orbits the sun much quicker than Venus. And Venus and Earth's orbit time are closer. That means Mercury is going to "lap" the earth far more often which gives opportunity for a transit. (Imagine a track race where you're on the outer track and the person next track in is running only slightly faster. They'd...	[ "Transits of Venus are among the rarest of predictable astronomical phenomena. They occur in a pattern that generally repeats every 243 years, with pairs of transits eight years apart separated by long gaps of 121.5 years and 105.5 years. The periodicity is a reflection of the fact that the orbital periods of Earth...
why do states seem to carry out executions in the middle of the night rather than during the day?	If someone is due to be executed on October 1st, they do it right when it turns october 1st, right after midnight.	[ "Hangings always take place at dawn on Friday and are by the long drop method developed in the United Kingdom by William Marwood. The executioner refers to the Official Table of Drops. The government have said that they:\n", "Several states also allow victims' families and relatives selected by the prisoner to wa...
how lottery cards are made?	The non playing areas are all the same and made by standard off-set printing methods. A special printer based on the same technology as ink jet printers selects numbers at random from a computer bank and prints them on the playing area, along with the unique bar code. Then off-set printing is used to cover the number...	[ "The classic lottery is a drawing in which each contestant buys a combination of numbers. Each combination of numbers, or \"play\", is usually priced at $1. Plays are usually non-exclusive, meaning that two or more ticket holders may buy the same combination. The lottery organization then draws the winning combinat...
Did Living Standards Decline After the Fall of Rome?	Hello there. This is not the answer you are waiting for, but I am going to try help you framing it differently so it can be answered by more knowledgeable people. Because the question, as it is, is very very difficult to answer, for several reasons: & #x200B; * The processes you are asquing about happened very diff...	[ "We often assume that the collapse of the Roman Empire was a catastrophe for everyone involved. Tainter points out that it can be seen as a very rational preference of individuals at the time, many of whom were better off (all but the elite, presumably.) Archeological evidence from human bones indicates that averag...
How did Zhenjin die? (the father of Temür Khan and son of Kublai khan)	According to the History of Yuan, he died of alcoholism. However, it may not have been as simple as merely drinking too much. It also states that shortly before his death, some ministers of the court wanted to propose that Kublai Khan abdicate his throne to Zhenjin on account of old age and because Prince Zhenjin w...	[ "Nurhaci succumbed to his wounds and died in Mukden eight months later. His eighth son, the fourth Beile, Hong Taiji, assumed the title of the Great Khan of the Later Jin. Hong Taiji, like his father, was defeated in the Battle of Ning-Jin a year later. While the failure to take Ningyuan temporarily halted the Jurc...
If you bring a bucket big enough to put over your head underwater, can you breathe in the bucket, being able to stay underwater longer?	I did this in our pool, using a small 3gal bucket and a big rock. (Tried cinderblock, but it wasn't heavy enough.) But unfortunately the CO2 builds up quickly. With my head in the bucket, most of the volume of the bucket is full of head, not full of air. I could only stay down for less than a minute before the air ...	[ "In the Drownproofing survival technique, the subject floats in a relaxed, near-vertical posture, with the top of the head just above the surface. Using the arms or legs to exert a downward pressure, the subject raises himself sufficiently so that the mouth is above the surface and a breath is taken, before droppin...
why do islands come in chains?	The Earth is divided into layers of what it's made of. The crust on the outside, about 5 to 50 miles thick, is solid rock that was originally made from volcanic eruptions. Then there's the mantle which is about 1800 miles thick, also solid rock but is primordial having been mostly solid since the Earth was formed. Then...	[ "The chain consists of two large islands (Tawhiti Rahi, the larger at , and Aorangi () to the south), and several smaller islands. Aorangaia and Archway Island lie to the southwest of Aorangi Island, and there is also a group of smaller rocky islets between the two main islands, the largest of which is Motu Kapiti....
my poop floats sometimes, and sinks others. what gives?	The density can vary based on things like fat content; having too much fat in it can make it float for example.	[ "An object that sinks displaces an amount of fluid equal to the object's volume. Thus buoyancy is expressed through Archimedes' principle, which states that the weight of the object is reduced by its volume multiplied by the density of the fluid. If the weight of the object is less than this displaced quantity, the...
why are whites and yolks mixed in separately while baking cakes? sometimes extra yolk is also added. how does that affect the cake?	They aren’t always separate. More often than not the whole egg goes in. Yolks the fattiest most flavorful part so they extra yolks being more moisture and depth to taste. Whites are comparatively less so but whip well to being structure and solidify cakes (binder).	[ "Angel food cake requires egg whites whipped until they are stiff. Cream of tartar is added to the mixture to stabilize the egg whites. Remaining ingredients are gently folded into the egg white mixture. For this method of leavening to work well, it is useful to have flour that has been made of softer wheat. Cake f...
how does the us democratic party's rule of proportional representation work?	All candidates who get 15% or more of the vote in a certain state get delegates. How many delegates they get depends on the number of people who voted for them: if candidate A gets twice as many votes as candidate B, then candidate A gets twice as many delegates (up to some rounding). As an example, suppose we had thr...	[ "A party-line vote in a deliberative assembly (such as a constituent assembly, parliament, or legislature) is a vote in which a substantial majority of members of a political party vote the same way (usually in opposition to the other political party(ies) whose members vote the opposite way). The term implies that ...
spanning tree network?	I assume you have a basic understanding of networking to be asking this question. But essentially, if you have a layer 2 network without spanning tree or some other means enabled what happens is the broadcasts/traffic would propagate throughout the network forever. Spanning tree stops loops by disabling one of the li...	[ "The role of the Common Spanning Tree (CST) in a network, and the Common and Internal Spanning Tree (CIST) configured on each device, is to prevent loops within a wider network that may span more than one MSTP Region and parts of the network running in legacy STP or RSTP mode.\n", "Minimum spanning trees have dir...
What invasive species invaded and destroyed ecosystems without the help of humans?	This can occur when previously isolated ecosystems become connected in some way. Check out the Great American Interchange, when North and South America became connected by a land bridge. A lot of South American animal species became extinct shortly after, likely being outcompeted by Invaders from the north. [ PBS Eons...	[ "Invaded ecosystems may have experienced disturbance, typically human-induced. Such a disturbance may give invasive species a chance to establish themselves with less competition from natives less able to adapt to a disturbed ecosystem.\n", "In Mexico the effects of invasive species has been documented since the ...
How did the Haudenosaunee/Iroquois Confederacy form?	> How accurate is the story of Hiawatha and Great Peacemaker? To start out with, there isn't a singular concerning the efforts of the Peacemaker, Hiawatha, and Jigonsaseh (the third major founder that is often neglected in these conversations). There are several different traditions, each with some slight variations...	[ "The Iroquois Confederacy was an alliance of tribes, originally from the upstate New York area consisting of the Seneca, Cayuga, Onondaga, Oneida, Mohawk, and, later, Tuscarora. In pre-revolutionary war days, their confederacy expanded to areas from Kentucky and Virginia north. All of the members of the Confederacy...
Would someone with anaemia get intoxicated easier?	First, anemia is not decreased blood volume but rather low red blood cells or hemoglobin in the blood. This is due to, as you said, a variety of reasons. Alcohol is metabolized in the liver by three primary systems: alcohol dehydrogenase, CYP2E1, and a catalase. Each of these metabolize ethanol to acetaldehyde which ...	[ "In addition to respiratory failure and accidents caused by effects on the central nervous system, alcohol causes significant metabolic derangements. Hypoglycaemia occurs due to ethanol's inhibition of gluconeogenesis, especially in children, and may cause lactic acidosis, ketoacidosis, and acute renal failure. Met...
Was there any serious opposition to the Habsburg dynasty for the Imperial throne between the death of Frederick III and the War of the Austrian Succession (1493-1740)?	You might enjoy my earlier answer on the [crazy negotiations behind the election of 1519](_URL_0_) (Charles V). And, er, "negotiations."	[ "The heir apparent to the throne bore the title of Crown Prince (\"Kronprinz\"); heirs presumptive were called \"Thronfolger\", in addition to their title of Archduke. Francis I was followed by Ferdinand Charles, (later Ferdinand I). In the wake of the 1848 revolutions, the empire's existence was in danger. The Hab...
i know who takes over if a u.s. president were to die in office, but who would take over if a presidential candidate were to die of a heart attack or such? they're running mate or would their party nominate another candidate? what would happen?	If it's a presidential candidate (and not the president elect), then I think it's in the hands of the party to decide. I can't think of an instance of a presidential candidate having to withdraw, but there are examples of that at other levels. For example, back in 2004 for the Illinois Senate race, Jack Ryan won the ...	[ "If the president dies, resigns, or is otherwise made permanently unable to carry out their duties, then the duties of the president are carried out by the president of the National Assembly. If the president of the National Assembly is not able to act as president, then the vice-presidents, with assistance from th...
There has been some claim that the Dalai Lama presided over a feudalistic/slave Tibet until Chinese Communism abolished the system. How accurate is this?	Using the term 'feudalistic' and 'slavery' as a comparative isn't a very appropriate way to view either system. Feudalism implies an aristocracy who owns land by inherited right, but also have a duty to the bonded serfs who work the land and recognition of a greater authority. Slavery implies the use of people as liqui...	[ "China took full control of Tibet in 1959. In the wake of the takeover and especially during the cultural revolution many monasteries were destroyed and many monks and laypeople killed. The 14th Dalai Lama fled to India and has since ceded temporal power to an elected government-in-exile. The current Dalai Lama has...
What was "Viking" ale?	First of all, we must remember than unlike today, "ale" and "beer" were not the same type of drink in early medieval times. "Beer" or björr might refer to ale-type beer, but also to mead or even cider. Its not exactly clear if this is supposed to be a catch-all term for fermented drinks, or just misstranslation of the...	[ "The brewery's literature says this pale ale takes its name from the castle built by King John in 1207 less than one mile from the brewery, from where King John rode out to Runnymede to sign the Magna Carta. The beer is deep amber in colour with a blend of pale ale and crystal malt, the bitterness and fruity aroma ...
Why did the Red Army in WW2 allow itself to be encircled time and again? Bad leadership, arrogance, or other factors?	A number of factors. First of all, encirclements in general were a product of the highly mobile warfare of WWII. It was easy for the side that had the initiative to mass their forces in a small area, achieve a breakthrough, and then use their mobility to quickly dash deep behind enemy lines. Envelopments didn't just ha...	[ "German troops reached the outskirts of Moscow in December 1941, but failed to capture it, due to staunch Soviet defence and counterattacks. At the Battle of Stalingrad in 1942–43, the Red Army inflicted a crushing defeat on the German army. Due to the unwillingness of the Japanese to open a second front in Manchur...
why when you look in a mirror with a mirror oppisite that it goes on forever, but seems to get darker the further in it gets?	Mirrors aren't perfect - not all of the light that hits a mirror is reflected back out again. If, for instance, a mirror reflects 90% of the light that hits it, that means 10% will be lost. So on the first reflection, you'll be down to 90% of the original light intensity. It hits the second mirror, and we drop 10% f...	[ "The reflection in the mirror is distorted and discolored, possibly representing the woman's dislike for herself. The colors used here are dark and make her look very old. Instead of the happiness reflected in the real girl, the reflected girl seems distraught. \n", "In a classic self-contained infinity mirror, a...
What limited the hunter-gatherer population in comparison to agricultural societies?	Whenever food production capability jumps, like what happened in southern China after the advent of high-yield rice or what happened recently with fertilisers, population soon follows. Agricultural societies tend to make children more frequently. Studies in modern and ancient nomadic populations showed that with variou...	[ "Many groups continued their hunter-gatherer ways of life, although their numbers have continually declined, partly as a result of pressure from growing agricultural and pastoral communities. Many of them reside in the developing world, either in arid regions or tropical forests. Areas that were formerly available ...
If comets are losing mass as they get closer to the sun, how are we able to accurately predict Halley's Comet's trajectory?	We cannot accurately predict it in the sense of being 100% accurate, it's a ball park figure based on intelligent assumptions being made & then plugging in those figures to work out the path of the comet. Done often enough (i.e. via a computer) you can start to model trajectories & work out the most likely path.	[ "On 27 June 2018, astronomers reported a non-gravitational acceleration to ʻOumuamua's trajectory, potentially consistent with a push from solar radiation pressure. Initial speculation as to the cause of this acceleration pointed to comet off-gassing, whereby portions of the object are ejected as the Sun heats the ...
How Did Newfoundland Interact With Slavery in the Americas & Carribbean?	They were indeed, and the trade relationship between Newfoundland and the Caribbean has had a lasting effect on the culture that can be seen to this day. Since the first [livyers](_URL_0_) started staying in Newfoundland around 1610 till about the 1960's the only industry was based around the cod fishery. This cod wa...	[ "The waters surrounding Newfoundland in the early 19th century were frequented by large merchant ships employed in the seal and codfish trade in Brazil, Italy, Cuba, Mexico, the United States, and those transporting coal, lumber and vegetables from the Maritimes islands, molasses from Barbados, salt from Spain, and...
Is there any meaning to the phrase "twice as hot" or "twice as cold" as 0 degrees?	tl;dr: Yes you can double or half the temperature of something, but not in the way you're probably thinking. The confusing part of this topic for most people is that the temperature scales that we use in day-to-day life are kind of...arbitrary. The "zero" on the Fahrenheit scale was based on [the temperature of a ...	[ "According to the Jamieson-Fausset-Brown commentary, \"cold\" must mean \"more than negatively cold\", i.e. not warm: it must mean \"positively, icy cold: never warmed\", while \"hot\" literally means \"boiling\" or \"fervent\". They comment that \"the lukewarm state (verse 16), if it be the transitional stage to a...
How can TSA/Airport security workers stand next to X and T ray machines all day everyday without any ill effects?	Like any radiation worker, they apply ALARA. That means that you should take steps to make your radiation exposure "As Low As Reasonably Achievable". The ways to do this are the maximize distance from the source, minimize time near it, and use shielding when possible. If you pay close attention when passing through se...	[ "The UK trialed a controversial new method of screening passengers to further improve airport security using backscatter X-ray machines that provide a 360-degree view of a person, as well as \"see\" under clothes, right down to the skin and bones. They are no longer used and were replaced by millimeter wave scanner...
could someone get in trouble for accidentally stumbling upon child porn	Theoretically yes, practically no. Firstly law enforcement are not tracking those who on a single occasion saw something for a few seconds. Secondly if you accidentally clicked on something innocent then it is likely that hundreds of other people would have done the same and law enforcement can track back on your devic...	[ "If the video or images in question are of individuals who are minors, including material created by the subject (ex. selfies, etc.), investigation by law enforcement can lead to charges for child pornography as has happened in cases involving sexting.\n", "According to the Mayo Clinic of the U.S.A., studies and ...
If something huge hit the Earth, would humans and objects on the opposite side of the planet go flying up in the air?	The earth is quite squishy on the big scale. It would be like hitting a water balloon i think. A gigantic shock wave would propagate around the earth from the impact location. If the object is big enough, the earth's crust would be thrown into space and the earth would turn into a giant ball of lava.	[ "When a near-Earth object impacts Earth, objects up to a few tens of metres across ordinarily explode in the upper atmosphere (usually harmlessly), with most or all of the solids vaporized, while larger objects hit the water surface, forming waves, or the solid surface, forming impact craters.\n", "Each year, the...
If I shot a lazer that went forever in a straight line through space, what are the odds it would hit an object - star, planet, nebula etc..?	All lasers (and all photons in general) do go in straight lines through space. Edit: Removed my answer which presumed a static universe. BarnardPancake is correct.	[ "BULLET::::- The odds of getting none of the 50 main balls but getting both lucky stars is approximately 1 in 115. This means that it is less likely than getting 2 main balls and one lucky star (1 in 49). However, there is no prize for only getting 2 lucky stars.\n", "BULLET::::- 2008 XK (~12 meters in diameter) ...
why is there so much down time in professional football games?	I'm assuming you mean American football. There are a couple reasons: * It provides ample time to include commercials * Football is an extremely brutal and tiring sport; the downtime gives players a chance to recover between plays * Oftentimes there are a lot of things that have to happen between plays; the ball needs...	[ "Generally, American football games last much longer than 80-minute rugby league matches. Because the field is reset after each tackle in American football, it is much slower-paced than the more hectic rugby league, in which play stops for only as long as it takes the tackled player to get back to his feet and retu...
why does rain make us feel cozy?	Let's be a bit more specific and talk about gentle rains with maybe a bit of thunder in the distance while you're inside or under shelter. There's a big number of things that contribute. First, the soft white noise. A gentle rain creates tons of mildly distracting pleasant white noise. This helps reduce stress. It...	[ "Cultural attitudes towards rain differ across the world. In temperate climates, people tend to be more stressed when the weather is unstable or cloudy, with its impact greater on men than women. Rain can also bring joy, as some consider it to be soothing or enjoy the aesthetic appeal of it. In dry places, such as ...

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