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A300B10 (A310).
Airbus had demand for an aircraft smaller than the A300.
On 7 July 1978, the A310 (initially the A300B10) was launched with orders from Swissair and Lufthansa.
On 3 April 1982, the first prototype conducted its maiden flight and it received its type certification on 11 March 1983.
Keeping the same eight-abreast cross-section, the A310 is shorter than the initial A300 variants, and has a smaller wing, down from . The A310 introduced a two-crew glass cockpit, later adopted for the A300-600 with a common type rating. It was powered by the same GE CF6-80 or Pratt & Whitney JT9D then PW4000 turbofans. It can seat 220 passengers in two classes, or 240 in all-economy, and can fly up to .
It has overwing exits between the two main front and rear door pairs.
In April 1983, the aircraft entered revenue service with Swissair and competed with the Boeing 767–200, introduced six months before.
Its longer range and ETOPS regulations allowed it to be operated on transatlantic flights. Until the last delivery in June 1998, 255 aircraft were produced, as it was succeeded by the larger Airbus A330-200.
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It has cargo aircraft versions, and was derived into the Airbus A310 MRTT military tanker/transport.
A300-600ST.
Commonly referred to as the Airbus Beluga or "Airbus Super Transporter", these five airframes are used by Airbus to ferry parts between the company's disparate manufacturing facilities, thus enabling workshare distribution. They replaced the four Aero Spacelines Super Guppys previously used by Airbus.
ICAO code: A3ST
Operators.
, there are 197 A300 family aircraft in commercial service.
The five largest operators were FedEx Express (70), UPS Airlines (52), European Air Transport Leipzig (23), Iran Air (11), and Mahan Air (11).
Accidents and incidents.
As of June 2021, the A300 has been involved in 77 occurrences including 24 hull-loss accidents causing 1133 fatalities, and criminal occurrences and hijackings causing fatalities.
Aircraft on display.
Fifteen A300s are currently preserved:
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Agostino Carracci
Agostino Carracci (or Caracci; ; 16 August 1557 – 22 March 1602) was an Italian painter, printmaker, tapestry designer, and art teacher. He was, together with his brother, Annibale Carracci, and cousin, Ludovico Carracci, one of the founders of the Accademia degli Incamminati (Academy of the Progressives) in Bologna. Intended to devise alternatives to the Mannerist style favored in the preceding decades, this teaching academy helped propel painters of the School of Bologna to prominence.
Life.
Agostino Carracci was born in Bologna as the son of a tailor. He was the elder brother of Annibale Carracci and the cousin of Ludovico Carracci. He initially trained as a goldsmith. He later studied painting, first with Prospero Fontana, who had been Lodovico's master, and later with Bartolomeo Passarotti. He traveled to Parma to study the works of Correggio. Accompanied by his brother Annibale, he spent a long time in Venice, where he trained as an engraver under the renowned Cornelis Cort. Starting from 1574 he worked as a reproductive engraver, copying works of 16th century masters such as Federico Barocci, Tintoretto, Antonio Campi, Veronese and Correggio. He also produced some original prints, including two etchings.
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He traveled to Venice (1582, 1587–1589) and Parma (1586–1587). Together with Annibale and Ludovico he worked in Bologna on the fresco cycles in Palazzo Fava ("Histories of Jason and Medea", 1584) and Palazzo Magnani ("Histories of Romulus", 1590–1592). In 1592 he also painted the "Communion of St. Jerome", now in the Pinacoteca di Bologna and considered his masterwork. In 1620, Giovanni Lanfranco, a pupil of the Carracci, famously accused another Carracci student, Domenichino, of plagiarizing this painting. From 1586 is his altarpiece of the "Madonna with Child and Saints", in the National Gallery of Parma. In 1598 Carracci joined his brother Annibale in Rome, to collaborate on the decoration of the Gallery in Palazzo Farnese. From 1598 to 1600 is a "triple Portrait", now in Naples, an example of genre painting. In 1600 he was called to Parma by Duke Ranuccio I Farnese to begin the decoration of the Palazzo del Giardino, but he died before it was finished. His friend the poet Claudio Achillini composed an epitaph, which was later published by Carlo Cesare Malvasia in the life of the Carracci.
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Agostino's son Antonio Carracci was also a painter, and attempted to compete with his father's Academy.
An engraving by Agostino Carraci after the painting "Love in the Golden Age" by the 16th-century Flemish painter Paolo Fiammingo was the inspiration for Matisse's "Le bonheur de vivre" (Joy of Life).
Critical evaluation.
While his undoubted value in the graphic field is widely recognised, Agostino, as a painter, although admired by his contemporaries, ended up being overshadowed by the fame of his brother Annibale. Perhaps even his long practice of engraving ended up putting him at disadvantage, since he might have been perceived as more inclined to copy than to create.
Even Giovanni Pietro Bellori, who included Agostino Carracci in his selective collection of biographies of artists ("Vite de' pittori, scultori e architetti moderni", 1672), described his activity as a painter, with the sole exception of the "Communion of Saint Jerome", a work that he praises, almost entirely limited to the role of supporting his younger brother Annibale, and reproaches him for having dedicated too much of his work to graphic production.
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The modern critical evaluation of the painter Agostino Carracci probably still suffers from the negative legacies of the past. The fact that there is still only one important monograph dedicated to him published (Stephen E. Ostrow, from the United States, 1966, never translated into Italian), and that an individual exhibition on this artist has yet to be held, are probably significant factors that show that he remains an underrated artist.
However, there have been a positive critical reevaluation of the painter, since there is now a better awareness of his artistic role, alongside his more famous relatives, and the knowledge of his personal work is now greater.
Works.
"Oil on canvas unless otherwise noted"
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Adenylyl cyclase
Adenylate cyclase (EC 4.6.1.1, also commonly known as adenyl cyclase and adenylyl cyclase, abbreviated AC) is an enzyme with systematic name ATP diphosphate-lyase (cyclizing; 3′,5′-cyclic-AMP-forming). It catalyzes the following reaction:
It has key regulatory roles in essentially all cells. It is the most polyphyletic known enzyme: six distinct classes have been described, all catalyzing the same reaction but representing unrelated gene families with no known sequence or structural homology. The best known class of adenylyl cyclases is class III or AC-III (Roman numerals are used for classes). AC-III occurs widely in eukaryotes and has important roles in many human tissues.
All classes of adenylyl cyclase catalyse the conversion of adenosine triphosphate (ATP) to 3',5'-cyclic AMP (cAMP) and pyrophosphate. Magnesium ions are generally required and appear to be closely involved in the enzymatic mechanism. The cAMP produced by AC then serves as a regulatory signal via specific cAMP-binding proteins, either transcription factors, enzymes (e.g., cAMP-dependent kinases), or ion transporters.
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Classes.
Class I.
The first class of adenylyl cyclases occur in many bacteria including "E. coli" (as CyaA [unrelated to the Class II enzyme]). This was the first class of AC to be characterized. It was observed that "E. coli" deprived of glucose produce cAMP that serves as an internal signal to activate expression of genes for importing and metabolizing other sugars. cAMP exerts this effect by binding the transcription factor CRP, also known as CAP. Class I AC's are large cytosolic enzymes (~100 kDa) with a large regulatory domain (~50 kDa) that indirectly senses glucose levels. , no crystal structure is available for class I AC.
Some indirect structural information is available for this class. It is known that the N-terminal half is the catalytic portion, and that it requires two Mg2+ ions. S103, S113, D114, D116 and W118 are the five absolutely essential residues. The class I catalytic domain () belongs to the same superfamily () as the palm domain of DNA polymerase beta (). Aligning its sequence onto the structure onto a related archaeal CCA tRNA nucleotidyltransferase () allows for assignment of the residues to specific functions: γ-phosphate binding, structural stabilization, DxD motif for metal ion binding, and finally ribose binding.
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Class II.
These adenylyl cyclases are toxins secreted by pathogenic bacteria such as "Bacillus anthracis", "Bordetella pertussis", "Pseudomonas aeruginosa", and "Vibrio vulnificus" during infections. These bacteria also secrete proteins that enable the AC-II to enter host cells, where the exogenous AC activity undermines normal cellular processes. The genes for Class II ACs are known as cyaA, one of which is anthrax toxin. Several crystal structures are known for AC-II enzymes.
Class III.
These adenylyl cyclases are the most familiar based on extensive study due to their important roles in human health. They are also found in some bacteria, notably "Mycobacterium tuberculosis" where they appear to have a key role in pathogenesis. Most AC-III's are integral membrane proteins involved in transducing extracellular signals into intracellular responses. A Nobel Prize was awarded to Earl Sutherland in 1971 for discovering the key role of AC-III in human liver, where adrenaline indirectly stimulates AC to mobilize stored energy in the "fight or flight" response. The effect of adrenaline is via a G protein signaling cascade, which transmits chemical signals from outside the cell across the membrane to the inside of the cell (cytoplasm). The outside signal (in this case, adrenaline) binds to a receptor, which transmits a signal to the G protein, which transmits a signal to adenylyl cyclase, which transmits a signal by converting adenosine triphosphate to cyclic adenosine monophosphate (cAMP). cAMP is known as a second messenger.
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Cyclic AMP is an important molecule in eukaryotic signal transduction, a so-called second messenger. Adenylyl cyclases are often activated or inhibited by G proteins, which are coupled to membrane receptors and thus can respond to hormonal or other stimuli. Following activation of adenylyl cyclase, the resulting cAMP acts as a second messenger by interacting with and regulating other proteins such as protein kinase A and cyclic nucleotide-gated ion channels.
Photoactivated adenylyl cyclase (PAC) was discovered in "Euglena gracilis" and can be expressed in other organisms through genetic manipulation. Shining blue light on a cell containing PAC activates it and abruptly increases the rate of conversion of ATP to cAMP. This is a useful technique for researchers in neuroscience because it allows them to quickly increase the intracellular cAMP levels in particular neurons, and to study the effect of that increase in neural activity on the behavior of the organism. A green-light activated rhodopsin adenylyl cyclase (CaRhAC) has recently been engineered by modifying the nucleotide binding pocket of rhodopsin guanylyl cyclase.
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Structure.
Most class III adenylyl cyclases are transmembrane proteins with 12 transmembrane segments. The protein is organized with 6 transmembrane segments, then the C1 cytoplasmic domain, then another 6 membrane segments, and then a second cytoplasmic domain called C2. The important parts for function are the N-terminus and the C1 and C2 regions. The C1a and C2a subdomains are homologous and form an intramolecular 'dimer' that forms the active site. In "Mycobacterium tuberculosis" and many other bacterial cases, the AC-III polypeptide is only half as long, comprising one 6-transmembrane domain followed by a cytoplasmic domain, but two of these form a functional homodimer that resembles the mammalian architecture with two active sites. In non-animal class III ACs, the catalytic cytoplasmic domain is seen associated with other (not necessarily transmembrane) domains.
Class III adenylyl cyclase domains can be further divided into four subfamilies, termed class IIIa through IIId. Animal membrane-bound ACs belong to class IIIa.
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Mechanism.
The reaction happens with two metal cofactors (Mg or Mn) coordinated to the two aspartate residues on C1. They perform a nucleophilic attack of the 3'-OH group of the ribose on the α-phosphoryl group of ATP. The two lysine and aspartate residues on C2 selects ATP over GTP for the substrate, so that the enzyme is not a guanylyl cyclase. A pair of arginine and asparagine residues on C2 stabilizes the transition state. In many proteins, these residues are nevertheless mutated while retaining the adenylyl cyclase activity.
Types.
There are ten known isoforms of adenylyl cyclases in mammals:
These are also sometimes called simply AC1, AC2, etc., and, somewhat confusingly, sometimes Roman numerals are used for these isoforms that all belong to the overall AC class III. They differ mainly in how they are regulated, and are differentially expressed in various tissues throughout mammalian development.
Regulation.
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In neurons, calcium-sensitive adenylyl cyclases are located next to calcium ion channels for faster reaction to Ca2+ influx; they are suspected of playing an important role in learning processes. This is supported by the fact that adenylyl cyclases are "coincidence detectors", meaning that they are activated only by several different signals occurring together. In peripheral cells and tissues adenylyl cyclases appear to form molecular complexes with specific receptors and other signaling proteins in an isoform-specific manner.
Function.
Individual transmembrane adenylyl cyclase isoforms have been linked to numerous physiological functions. Soluble adenylyl cyclase (sAC, AC10) has a critical role in sperm motility. Adenylyl cyclase has been implicated in memory formation, functioning as a coincidence detector.
Class IV.
AC-IV was first reported in the bacterium "Aeromonas hydrophila", and the structure of the AC-IV from "Yersinia pestis" has been reported. These are the smallest of the AC enzyme classes; the AC-IV (CyaB) from "Yersinia" is a dimer of 19 kDa subunits with no known regulatory components (). AC-IV forms a superfamily with mammalian thiamine-triphosphatase called CYTH (CyaB, thiamine triphosphatase).
Classes V and VI.
These forms of AC have been reported in specific bacteria ("Prevotella ruminicola" and "Rhizobium etli" , respectively) and have not been extensively characterized. There are a few extra members (~400 in Pfam) known to be in class VI. Class VI enzymes possess a catalytic core similar to the one in Class III.
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Alexandra
Alexandra () is a female given name of Greek origin. It is the first attested form of its variants, including Alexander (, ). Etymologically, the name is a compound of the Greek verb (; meaning 'to defend') and ( , ; meaning 'man'). Thus it may be roughly translated as "defender of man" or "protector of man". The name Alexandra was one of the epithets given to the Greek goddess Hera and as such is usually taken to mean "one who comes to save warriors". The earliest attested form of the name is the Mycenaean Greek ( or //), written in the Linear B syllabic script. Alexandra and its masculine equivalent, Alexander, are both common names in Greece as well as countries where Germanic, Romance, and Slavic languages are spoken.
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Articolo 31
Articolo 31 is a band from Milan, Italy, formed in 1990 by J-Ax and DJ Jad, combining hip hop, funk, pop and traditional Italian musical forms. They are one of the most popular Italian hip hop groups.
Band history.
Articolo 31 were formed by rapper J-Ax (real name Alessandro Aleotti) and DJ Jad (Vito Luca Perrini).
In the spoken intro of the album "Strade di Città" ("City Streets"), it is stated that the band is named after the article of the Irish constitution guaranteeing freedom of the press, although article 31 of the Irish constitution is not about the freedom of the press. They probably meant the Section 31 of the Broadcasting Authority Act.
Articolo 31 released one of the first Italian hip hop records, "Strade di città", in 1993. Soon, they signed with BMG Ricordi and started to mix rap with pop music – a move that earned them great commercial success but that alienated the underground hip hop scene, who perceived them as traitors.
In 1997, DJ Gruff dissed Articolo 31 in a track titled "1 vs 2" on the first album of the beatmaker Fritz da Cat, starting a feud that would go on for years.
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In 2001, Articolo 31 collaborated with the American old school rapper Kurtis Blow on the album "XChé SI!". In the same year, they made the film "Senza filtro" (in English, "Without filter"). Their producer was Franco Godi, who also produced the music for the "Signor Rossi" animated series.
Their 2002 album "Domani smetto" represented a further departure from hip hop, increasingly relying on the formula of rapping over pop music samples. Several of their songs rotate around the theme of soft drugs legalization in Italy (pointing strongly in favour).
Following their 2003 album "Italiano medio", the band took a break. Both J-Ax and DJ Jad have been involved with solo projects. In 2006, the group declared an indefinite hiatus.
Their posse, "Spaghetti Funk", includes other popular performers like Space One and pop rappers Gemelli DiVersi.
On 4 December 2022, it was officially announced Articolo 31 participation in the Sanremo Music Festival 2023. "Un bel viaggio" was later announced as their entry for the Sanremo Music Festival 2023.
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Alexander Kerensky
Alexander Fyodorovich Kerensky ( – 11 June 1970) was a Russian lawyer and revolutionary who led the Russian Provisional Government and the short-lived Russian Republic for three months from late July to early November 1917 (N.S.).
After the February Revolution of 1917, he joined the newly formed provisional government, first as Minister of Justice, then as Minister of War, and after July as the government's second Minister-Chairman. He was the leader of the social-democratic Trudovik faction of the Socialist Revolutionary Party. Kerensky was also a vice-chairman of the Petrograd Soviet, a position that held a sizable amount of power. Kerensky became the prime minister of the Provisional Government, and his tenure was consumed with World War I. Despite mass opposition to the war, Kerensky chose to continue Russia's participation. His government cracked down on anti-war sentiment and dissent in 1917, which made his administration even more unpopular.
Kerensky remained in power until the October Revolution. This revolution saw the Bolsheviks create a government led by them in a coalition with Left SRs, to replace Kerensky's government. Kerensky fled Russia and lived the remainder of his life in exile. He divided his time between Paris and New York City. Kerensky worked for the Hoover Institution at Stanford University, California.
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Biography.
Early life and activism.
Alexander Kerensky was born in Simbirsk (now Ulyanovsk) on the Volga river on 4 May 1881 and was the eldest son in the family. His father, Fyodor Mikhailovich Kerensky, was a teacher and director of the local gymnasium and was later promoted to be an inspector of public schools. His paternal grandfather Mikhail Ivanovich served as a priest in the village of Kerenka in the Gorodishchensky district of the Penza Governorate from 1830. The surname Kerensky comes from the name of this village. His maternal grandfather was head of the Topographical Bureau of the Kazan Military District. His mother, Nadezhda Aleksandrovna (née Adler), was the granddaughter of a former serf who had managed to purchase his freedom before serfdom was abolished in 1861. He subsequently embarked upon a mercantile career, in which he prospered. This allowed him to move his business to Moscow, where he continued his success and became a wealthy Moscow merchant.
Members of the Kerensky and Ulyanov families were friends; Kerensky's father was the teacher of Vladimir Ulyanov (Lenin) and had even secured him acceptance into the University of Kazan. In 1889, when Kerensky was eight, the family moved to Tashkent, where his father had been appointed the main inspector of public schools (superintendent). Kerensky graduated with honours in 1899. The same year he entered St. Petersburg University, where he studied history and philology. The next year he switched to law. He earned his law degree in 1904 and married Olga Lvovna Baranovskaya, the daughter of a Russian general, the same year. Kerensky joined the Narodnik movement and worked as a legal counsel to victims of the Revolution of 1905. At the end of 1904, he was jailed on suspicion of belonging to a militant group. Afterwards, he gained a reputation for his work as a defence lawyer in a number of political trials of revolutionaries.
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In 1912, Kerensky became widely known when he visited the goldfields at the Lena River and published material about the Lena massacre. In the same year, Kerensky was elected to the Fourth Duma as a member of the Trudoviks, a socialist, non-Marxist labour party founded by Alexis Aladin that was associated with the Socialist-Revolutionary Party, and joined a Freemason society uniting the anti-monarchy forces that strived for democratic renewal of Russia. In fact, the Socialist Revolutionary Party bought Kerensky a house, as he otherwise would not be eligible for election to the Duma, according to the Russian property-laws.
During the 4th Session of the Fourth Duma in spring 1915, Kerensky appealed to Mikhail Rodzianko with a request from the Council of elders to inform the tsar that to succeed in the war he must:
In August, he became a significant member of the Progressive Bloc, which included several socialist parties, Mensheviks, and Liberals – but not Bolsheviks. He was a brilliant orator and skilled parliamentary leader of the socialist opposition to the government of Tsar Nicholas II.
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Kerensky was an active member of the irregular Freemasonic lodge, the Grand Orient of Russia's Peoples, which derived from the Grand Orient of France. Kerensky was Secretary-General of the Grand Orient of Russia's Peoples and stood down following his ascent to the government in July 1917. He was succeeded by a Menshevik, Alexander Halpern.
Rasputin.
In response to bitter resentments held against the imperial favourite Grigori Rasputin in the midst of Russia's failing effort in World War I, Kerensky, at the opening of the Duma on 2 November 1916, called the imperial ministers "hired assassins" and "cowards", and alleged that they were "guided by the contemptible Grishka Rasputin!" Grand Duke Nicholas Mikhailovich, Prince Georgy Lvov, and General Mikhail Alekseyev attempted to persuade the Emperor Nicholas II to send away the Empress Alexandra Feodorovna, Rasputin's steadfast patron, either to the Livadia Palace in Yalta or to Britain. Mikhail Rodzianko, Zinaida Yusupova (the mother of Felix Yusupov), Alexandra's sister Elisabeth, Grand Duchess Victoria and the empress's mother-in-law Maria Feodorovna also tried to influence and pressure the imperial couple to remove Rasputin from his position of influence within the imperial household, but without success. According to Kerensky, Rasputin had terrorised the empress by threatening to return to his native village.
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Members of the nobility murdered Rasputin in December 1916, and he was buried near the imperial residence in Tsarskoye Selo. Shortly after the February Revolution of 1917, Kerensky ordered soldiers to re-bury the corpse at an unmarked spot in the countryside. However, the truck broke down or was forced to stop because of the snow on Lesnoe Road outside of St. Petersburg. It is likely the corpse was incinerated (between 3 and 7 in the morning) in the cauldrons of the nearby boiler shop of the Saint Petersburg State Polytechnical University, including the coffin, without leaving a single trace.
Russian Provisional Government of 1917.
When the February Revolution broke out in 1917, Kerensky – together with Pavel Milyukov – was one of its most prominent leaders. As one of the Duma's most well-known speakers against the monarchy and as a lawyer and defender of many revolutionaries, Kerensky became a member of the Provisional Committee of the State Duma and was elected vice-chairman of the newly formed Petrograd Soviet. These two bodies, the Duma and the Petrograd Soviet, or – rather – their respective executive committees, soon became each other's antagonists on most matters except regarding the end of the tsar's autocracy.
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The Petrograd Soviet grew to include 3000 to 4000 members, and their meetings could drown in a blur of everlasting orations. At the meeting of to the executive committee of the Petrograd Soviet, or Ispolkom, formed a self-appointed committee, with (eventually) three members from each of the parties represented in the Soviet. Kerensky became one of the members representing the Socialist Revolutionary Party (the SRs).
On , without any consultation with the government, the Ispolkom of the Soviet issued the infamous Order No. 1, intended only for the 160,000-strong Petrograd garrison, but soon interpreted as applicable to all soldiers at the front. The order stipulated that all military units should form committees like the Petrograd Soviet. This led to confusion and "stripping of officers' authority"; further, "Order No. 3" stipulated that the military was subordinate to Ispolkom in the political hierarchy. The ideas came from a group of socialists and aimed to limit the officers' power to military affairs. The socialist intellectuals believed the officers to be the most likely counterrevolutionary elements. Kerensky's role in these orders is unclear, but he participated in the decisions. But just as before the revolution he had defended many who disliked the tsar, he now saved the lives of many of the tsar's civil servants about to be lynched by mobs.
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Additionally, the Duma formed an executive committee which eventually became the Russian Provisional Government. As there was little trust between Ispolkom and this government (and as he was about to accept the office of Attorney General in the Provisional Government), Kerensky gave a most passionate speech, not just to the Ispolkom, but to the entire Petrograd Soviet. He then swore, as minister, never to violate democratic values, and ended his speech with the words "I cannot live without the people. In the moment you begin to doubt me, then kill me." The huge majority (workers and soldiers) gave him great applause, and Kerensky now became the first and "the only one" who participated in both the Provisional Government and the Ispolkom. As a link between Ispolkom and the Provisional Government, Kerensky stood to benefit from this position.
After the first government crisis over Pavel Milyukov's secret note re-committing Russia to its original war-aims on 2–4 May, Kerensky became the Minister of War and the dominant figure in the newly formed socialist-liberal coalition government. On 10 May (Julian calendar), Kerensky started for the front and visited one division after another, urging the men to do their duty. His speeches were impressive and convincing for the moment, but had little lasting effect. Under Allied pressure to continue the war, he launched what became known as the Kerensky Offensive against the Austro-Hungarian/German South Army on . At first successful, the offensive soon met strong resistance and the Central Powers riposted with a strong counter-attack. The Russian army retreated and suffered heavy losses, and it became clear from many incidents of desertion, sabotage, and mutiny that the army was no longer willing to attack.
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The military heavily criticised Kerensky for his liberal policies, which included stripping officers of their mandates and handing over control to revolutionary-inclined "soldier committees" () instead; abolition of the death penalty; and allowing revolutionary agitators to be present at the front. Many officers scornfully referred to commander-in-chief Kerensky as the "persuader-in-chief".
On 2 July 1917 the Provisional Government's first coalition collapsed over the question of Ukraine's autonomy. Following the July Days unrest in Petrograd (3–7 July [16–20 July, N.S.] 1917) and the official suppression of the Bolsheviks, Kerensky succeeded Prince Georgy Lvov as Russia's prime minister on . Following the Kornilov Affair, an attempted military coup d'état at the end of August, and the resignation of the other ministers, he appointed himself Supreme Commander-in-Chief, as well.
On 15 September Kerensky proclaimed Russia a republic, which was contrary to the non-socialists' understanding that the Provisional Government should hold power only until a Constituent Assembly should meet to decide Russia's form of government, but which was in line with the long-proclaimed aim of the Socialist Revolutionary Party. He formed a five-member Directory, which consisted of himself, Minister of Foreign Affairs Mikhail Tereshchenko, Minister of War General Aleksandr Verkhovsky, Minister of the Navy Admiral Dmitry Verderevsky and Minister of Posts and Telegraphs . He retained his post in the final coalition government in October 1917 until the Bolsheviks overthrew it on .
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Kerensky faced a major challenge: three years of participation in World War had exhausted Russia, while the provisional government offered little motivation for a victory outside of continuing Russia's obligations towards its allies. Russia's continued involvement in the war was not popular among the lower and middle classes, and especially not popular among the soldiers. They had all believed that Russia would stop fighting when the Provisional Government took power, and subsequently felt deceived. Furthermore, Vladimir Lenin and his Bolshevik party were promising "peace, land, and bread" under a communist system. The Russian army, war-weary, ill-equipped, dispirited and ill-disciplined, was disintegrating, with soldiers deserting in large numbers. By autumn 1917, an estimated two million men had unofficially left the army.
Kerensky and other political leaders continued Russia's involvement in World War I, thinking that a glorious victory was the only way forward, and fearing that the economy, already under huge stress from the war effort, might become increasingly unstable if vital supplies from France and from the United Kingdom ceased flowing. The dilemma of whether to withdraw was a great one, and Kerensky's inconsistent and impractical policies further destabilised the army and the country at large.
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Furthermore, Kerensky adopted a policy that isolated the right-wing conservatives, both democratic and monarchist-oriented. His philosophy of "no enemies to the left" greatly empowered the Bolsheviks and gave them a free hand, allowing them to take over the military arm or "voyenka" () of the Petrograd and Moscow Soviets. His arrest of Lavr Kornilov and other officers left him without strong allies against the Bolsheviks, who ended up being Kerensky's strongest and most determined adversaries, as opposed to the right wing, which evolved into the White movement.
October Revolution of 1917.
During the Kornilov Affair, Kerensky had distributed arms to the Petrograd workers, and by November most of these armed workers had gone over to the Bolsheviks. On 1917, the Bolsheviks launched the second Russian revolution of the year. Kerensky's government in Petrograd had almost no support in the city. Only one small force, a subdivision of the 2nd company of the First Petrograd Women's Battalion, also known as The Women's Death Battalion, was willing to fight for the government against the Bolsheviks, but this force was overwhelmed by the numerically superior pro-Bolshevik forces, defeated, and captured. The Bolsheviks overthrew the government rapidly by seizing governmental buildings and the Winter Palace.
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Kerensky escaped the Bolsheviks and fled to Pskov, where he rallied some loyal troops for an attempt to re-take the city. His troops managed to capture Tsarskoye Selo but were beaten the next day at Pulkovo. Kerensky narrowly escaped, and he spent the next few weeks in hiding before fleeing the country, eventually arriving in France. During the Russian Civil War, he supported neither side, as he opposed both the Bolshevik regime and the White Movement. Meanwhile, viewed by Woodrow Wilson as the spokesman for Russian democracy, he strongly influenced Wilson on Russian matters. Kerensky sought to discredit Alexander Kolchak in Western eyes, telling American diplomats that if Kolchak succeeded, he would "inaugurate a regime hardly less sanguinary and repressive than that of the Bolshevists."
Personal life.
Kerensky was married to Olga Lvovna Baranovskaya and they had two sons, Oleg (1905–1984) and Gleb (1907–1990), who both went on to become engineers. Kerensky's grandson (also named Oleg), according to the Internet Movie Database, played his grandfather's role in the 1981 film "Reds". Kerensky and Olga were divorced in 1939 soon after he settled in Paris. In 1939, while visiting the United States, he met and secretly married Australian journalist Lydia Ellen "Nell" Tritton (1899–1946), who became his press secretary and translator. The marriage took place in Martins Creek, Pennsylvania.
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When Germany invaded France in 1940, they emigrated to the United States. After the Axis invasion of the Soviet Union in 1941, Kerensky offered his support to Joseph Stalin.
When his wife Nell became terminally ill in 1945, Kerensky travelled with her to Brisbane, Australia, and lived there with her family. She suffered a stroke in February 1946, and he remained there until her death on 10 April 1946. Kerensky then returned to the United States, where he spent the rest of his life.
Kerensky eventually settled in New York City, living on the Upper East Side on 91st Street near Central Park but spent much of his time at the Hoover Institution at Stanford University in California, where he both used and contributed to the Institution's huge archive on Russian history, and where he taught graduate courses. He wrote and broadcast extensively on Russian politics and history. His last public lecture was delivered at Kalamazoo College in Kalamazoo, Michigan, in October 1967.
Death.
Kerensky died of arteriosclerotic heart disease at St. Luke's Hospital in New York City on 11 June 1970, after being initially admitted for injuries sustained from a fall. At 89, he was one of the last surviving major participants in the turbulent events of 1917. The local Russian Orthodox Churches in New York City refused to grant Kerensky burial rites because of his association with Freemasonry, and because they saw him as largely responsible for the Bolsheviks' seizure of power. A Serbian Orthodox Church also refused burial rites. Kerensky's body was flown to London, where his two sons resided; he was buried at the non-denominational Putney Vale Cemetery.
Archives.
Papers of the Kerensky family are held at the Cadbury Research Library, University of Birmingham.
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Ansgar
Ansgar (8 September 801 – 3 February 865), also known as Anskar, Saint Ansgar, Saint Anschar or Oscar, was Archbishop of Hamburg-Bremen in the northern part of the Kingdom of the East Franks. Ansgar became known as the "Apostle of the North" because of his travels and the See of Hamburg received the missionary mandate to bring Christianity to Northern Europe.
Life.
Ansgar was the son of a noble Frankish family, born near Amiens (present day France). After his mother's early death, Ansgar was brought up in Benedictine monastery of Corbie in Picardy. According to the "Vita Ansgarii" ("Life of Ansgar"), when the little boy learned in a vision that his mother was in the company of Mary, mother of Jesus, his careless attitude toward spiritual matters changed to seriousness. His pupil, successor, and eventual biographer Rimbert considered the visions (of which this was the first) to have been Ansgar's main life motivator.
Ansgar acted in the context of the phase of Christianization of Saxony (present day Northern Germany) begun by Charlemagne and continued by Charlemagne's son and successor, Louis the Pious. In 822 Ansgar became one of many missionaries sent to found the abbey of Corvey (New Corbie) in Westphalia, where he became a teacher and preacher. A group of monks including Ansgar were sent further north to Jutland with the king Harald Klak, who had received baptism during his exile. With Harald's downfall in 827 and Ansgar's companion Autbert having died, their school for the sons of courtiers closed and Ansgar returned to Germany. Then in 829, after the Swedish king Björn at Hauge requested missionaries for his Swedes, King Louis sent Ansgar, now accompanied by friar Witmar from New Corbie as his assistant. Ansgar preached and made converts, particularly during six months at Birka, on Lake Mälaren, where the wealthy widow Mor Frideborg extended hospitality. Ansgar organized a small congregation with her and the king's steward, Hergeir, as its most prominent members.
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In 831 Ansgar returned to Louis' court at Worms and was appointed to the Archbishopric of Hamburg-Bremen. This was a new archbishopric, incorporating the bishoprics of Bremen and Verden and with the right to send missions into all the northern lands, as well as to consecrate bishops for them. Ansgar received the mission of evangelizing pagan Denmark, Norway and Sweden. The King of Sweden decided to cast lots as to whether to admit the Christian missionaries into his kingdom. Ansgar recommended the issue to the care of God, and the lot was favorable. Ansgar was consecrated as a bishop in November 831, with the approval of Gregory IV. Before traveling north once again, Ansgar traveled to Rome to receive the pallium directly from the pope's hands, and was formally named legate for the northern lands. Ebbo, Archbishop of Reims had previously received a similar commission, but would be deposed twice before his death in 851, and never actually traveled so far north, so the jurisdiction was divided by agreement, with Ebbo retaining Sweden for himself. For a time Ansgar devoted himself to the needs of his own diocese, which was still a missionary territory and had few churches. He founded a monastery and a school in Hamburg. Although intended to serve the Danish mission further north, it accomplished little.
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After Louis the Pious died in 840, his empire was divided and Ansgar lost the abbey of Turholt, which Louis had given to endow Ansgar's work. Then in 845, the Danes unexpectedly raided Hamburg, destroying all the church's treasures and books. Ansgar now had neither see nor revenue, and many helpers deserted him. The new king, Louis' third son, Louis the German, did not re-endow Turholt to Ansgar, but in 847 he named the missionary to the vacant diocese of Bremen, where Ansgar moved in 848. However, since Bremen had been suffragan to the Bishop of Cologne, combining the sees of Bremen and Hamburg presented canonical difficulties. After prolonged negotiations, Pope Nicholas I would approve the union of the two dioceses in 864.
Through this political turmoil, Ansgar continued his northern mission. The Danish civil war compelled him to establish good relations with two kings, Horik the Elder and his son, Horik II. Both assisted him until his death; Ansgar was able to secure permission to build a church in Sleswick north of Hamburg and recognition of Christianity as a tolerated religion. Ansgar did not forget the Swedish mission, and spent two years there in person (848–850), averting a threatened pagan reaction. In 854, Ansgar returned to Sweden when king Olof ruled in Birka. According to Rimbert, he was well disposed to Christianity. On a Viking raid to Apuole (current village in Lithuania) in Courland, the Swedes plundered the Curonians.
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Death and legacy.
Ansgar was buried in Bremen in 865. His successor as archbishop, Rimbert, wrote the "Vita Ansgarii". He noted that Ansgar wore a rough hair shirt, lived on bread and water, and showed great charity to the poor. Adam of Bremen attributed the "Vita et miracula of Willehad" (first bishop of Bremen) to Ansgar in "Gesta Hammenburgensis ecclesiæ"; Ansgar is also the reputed author of a collection of brief prayers "Pigmenta" (ed. J. M. Lappenberg, Hamburg, 1844). Pope Nicholas I declared Ansgar a saint shortly after the missionary's death. The first actual missionary in Sweden and the Nordic countries (and organizer of the Catholic church therein), Ansgar was later declared "Patron of Scandinavia".
Relics are located in Hamburg in two places: St. Mary's Cathedral (Ger.: Domkirche St. Marien) and St. Ansgar's and St. Bernard's Church (Ger.: St. Ansgar und St. Bernhard Kirche).
Statues of Bishop Ansgar stand in Hamburg, Copenhagen and Ribe, as well as a stone cross at Birka. His feast day (Lesser Festival) is 3 February, as it is in the Church of England, the Episcopal Church, and the Evangelical Lutheran Church in America.
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Visions.
Although a historical document and primary source written by a man whose existence can be proven historically, the "Vita Ansgarii" ("The Life of Ansgar") aims above all to demonstrate Ansgar's sanctity. It is partly concerned with Ansgar's visions, which, according to the author Rimbert, encouraged and assisted Ansgar's remarkable missionary feats.
Through the course of this work, Ansgar repeatedly embarks on a new stage in his career following a vision. According to Rimbert, his early studies and ensuing devotion to the ascetic life of a monk were inspired by a vision of his mother in the presence of Mary, mother of Jesus. Again, when the Swedish people were left without a priest for some time, he begged King Horik to help him with this problem; then after receiving his consent, consulted with Bishop Gautbert to find a suitable man. The two together sought the approval of King Louis, which he granted when he learned that they were in agreement on the issue. Ansgar was convinced he was commanded by heaven to undertake this mission and was influenced by a vision he received when he was concerned about the journey, in which he met a man who reassured him of his purpose and informed him of a prophet that he would meet, the abbot Adalhard, who would instruct him in what was to happen. In the vision, he searched for and found Adalhard, who quoted to him "Islands, listen to me, pay attention, remotest peoples" (Isaiah 49:1). Ansgar interpreted this as showing God's will that he go to the Scandinavian countries as "most of that country consisted of islands, especially when Adalhard added "I will make you the light of the nations so that my salvation may reach to the ends of the earth" (Isaiah 49:6), since the end of the world in the north was in Swedish territory.
External links.
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Automated theorem proving
Automated theorem proving (also known as ATP or automated deduction) is a subfield of automated reasoning and mathematical logic dealing with proving mathematical theorems by computer programs. Automated reasoning over mathematical proof was a major motivating factor for the development of computer science.
Logical foundations.
While the roots of formalized logic go back to Aristotle, the end of the 19th and early 20th centuries saw the development of modern logic and formalized mathematics. Frege's "Begriffsschrift" (1879) introduced both a complete propositional calculus and what is essentially modern predicate logic. His "Foundations of Arithmetic", published in 1884, expressed (parts of) mathematics in formal logic. This approach was continued by Russell and Whitehead in their influential "Principia Mathematica", first published 1910–1913, and with a revised second edition in 1927. Russell and Whitehead thought they could derive all mathematical truth using axioms and inference rules of formal logic, in principle opening up the process to automation. In 1920, Thoralf Skolem simplified a previous result by Leopold Löwenheim, leading to the Löwenheim–Skolem theorem and, in 1930, to the notion of a Herbrand universe and a Herbrand interpretation that allowed (un)satisfiability of first-order formulas (and hence the validity of a theorem) to be reduced to (potentially infinitely many) propositional satisfiability problems.
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In 1929, Mojżesz Presburger showed that the first-order theory of the natural numbers with addition and equality (now called Presburger arithmetic in his honor) is decidable and gave an algorithm that could determine if a given sentence in the language was true or false.
However, shortly after this positive result, Kurt Gödel published "On Formally Undecidable Propositions of Principia Mathematica and Related Systems" (1931), showing that in any sufficiently strong axiomatic system, there are true statements that cannot be proved in the system. This topic was further developed in the 1930s by Alonzo Church and Alan Turing, who on the one hand gave two independent but equivalent definitions of computability, and on the other gave concrete examples of undecidable questions.
First implementations.
In 1954, Martin Davis programmed Presburger's algorithm for a JOHNNIAC vacuum-tube computer at the Institute for Advanced Study in Princeton, New Jersey. According to Davis, "Its great triumph was to prove that the sum of two even numbers is even". More ambitious was the Logic Theorist in 1956, a deduction system for the propositional logic of the "Principia Mathematica", developed by Allen Newell, Herbert A. Simon and J. C. Shaw. Also running on a JOHNNIAC, the Logic Theorist constructed proofs from a small set of propositional axioms and three deduction rules: modus ponens, (propositional) variable substitution, and the replacement of formulas by their definition. The system used heuristic guidance, and managed to prove 38 of the first 52 theorems of the "Principia".
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The "heuristic" approach of the Logic Theorist tried to emulate human mathematicians, and could not guarantee that a proof could be found for every valid theorem even in principle. In contrast, other, more systematic algorithms achieved, at least theoretically, completeness for first-order logic. Initial approaches relied on the results of Herbrand and Skolem to convert a first-order formula into successively larger sets of propositional formulae by instantiating variables with terms from the Herbrand universe. The propositional formulas could then be checked for unsatisfiability using a number of methods. Gilmore's program used conversion to disjunctive normal form, a form in which the satisfiability of a formula is obvious.
Decidability of the problem.
Depending on the underlying logic, the problem of deciding the validity of a formula varies from trivial to impossible. For the common case of propositional logic, the problem is decidable but co-NP-complete, and hence only exponential-time algorithms are believed to exist for general proof tasks. For a first-order predicate calculus, Gödel's completeness theorem states that the theorems (provable statements) are exactly the semantically valid well-formed formulas, so the valid formulas are computably enumerable: given unbounded resources, any valid formula can eventually be proven. However, "invalid" formulas (those that are "not" entailed by a given theory), cannot always be recognized.
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The above applies to first-order theories, such as Peano arithmetic. However, for a specific model that may be described by a first-order theory, some statements may be true but undecidable in the theory used to describe the model. For example, by Gödel's incompleteness theorem, we know that any consistent theory whose axioms are true for the natural numbers cannot prove all first-order statements true for the natural numbers, even if the list of axioms is allowed to be infinite enumerable. It follows that an automated theorem prover will fail to terminate while searching for a proof precisely when the statement being investigated is undecidable in the theory being used, even if it is true in the model of interest. Despite this theoretical limit, in practice, theorem provers can solve many hard problems, even in models that are not fully described by any first-order theory (such as the integers).
Related problems.
A simpler, but related, problem is "proof verification", where an existing proof for a theorem is certified valid. For this, it is generally required that each individual proof step can be verified by a primitive recursive function or program, and hence the problem is always decidable.
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Since the proofs generated by automated theorem provers are typically very large, the problem of proof compression is crucial, and various techniques aiming at making the prover's output smaller, and consequently more easily understandable and checkable, have been developed.
Proof assistants require a human user to give hints to the system. Depending on the degree of automation, the prover can essentially be reduced to a proof checker, with the user providing the proof in a formal way, or significant proof tasks can be performed automatically. Interactive provers are used for a variety of tasks, but even fully automatic systems have proved a number of interesting and hard theorems, including at least one that has eluded human mathematicians for a long time, namely the Robbins conjecture. However, these successes are sporadic, and work on hard problems usually requires a proficient user.
Another distinction is sometimes drawn between theorem proving and other techniques, where a process is considered to be theorem proving if it consists of a traditional proof, starting with axioms and producing new inference steps using rules of inference. Other techniques would include model checking, which, in the simplest case, involves brute-force enumeration of many possible states (although the actual implementation of model checkers requires much cleverness, and does not simply reduce to brute force).
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There are hybrid theorem proving systems that use model checking as an inference rule. There are also programs that were written to prove a particular theorem, with a (usually informal) proof that if the program finishes with a certain result, then the theorem is true. A good example of this was the machine-aided proof of the four color theorem, which was very controversial as the first claimed mathematical proof that was essentially impossible to verify by humans due to the enormous size of the program's calculation (such proofs are called non-surveyable proofs). Another example of a program-assisted proof is the one that shows that the game of Connect Four can always be won by the first player.
Applications.
Commercial use of automated theorem proving is mostly concentrated in integrated circuit design and verification. Since the Pentium FDIV bug, the complicated floating point units of modern microprocessors have been designed with extra scrutiny. AMD, Intel and others use automated theorem proving to verify that division and other operations are correctly implemented in their processors.
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Other uses of theorem provers include program synthesis, constructing programs that satisfy a formal specification. Automated theorem provers have been integrated with proof assistants, including Isabelle/HOL.
Applications of theorem provers are also found in natural language processing and formal semantics, where they are used to analyze discourse representations.
First-order theorem proving.
In the late 1960s agencies funding research in automated deduction began to emphasize the need for practical applications. One of the first fruitful areas was that of program verification whereby first-order theorem provers were applied to the problem of verifying the correctness of computer programs in languages such as Pascal, Ada, etc. Notable among early program verification systems was the Stanford Pascal Verifier developed by David Luckham at Stanford University. This was based on the Stanford Resolution Prover also developed at Stanford using John Alan Robinson's resolution principle. This was the first automated deduction system to demonstrate an ability to solve mathematical problems that were announced in the "Notices of the American Mathematical Society" before solutions were formally published.
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First-order theorem proving is one of the most mature subfields of automated theorem proving. The logic is expressive enough to allow the specification of arbitrary problems, often in a reasonably natural and intuitive way. On the other hand, it is still semi-decidable, and a number of sound and complete calculi have been developed, enabling "fully" automated systems. More expressive logics, such as higher-order logics, allow the convenient expression of a wider range of problems than first-order logic, but theorem proving for these logics is less well developed.
Relationship with SMT.
There is substantial overlap between first-order automated theorem provers and SMT solvers. Generally, automated theorem provers focus on supporting full first-order logic with quantifiers, whereas SMT solvers focus more on supporting various theories (interpreted predicate symbols). ATPs excel at problems with lots of quantifiers, whereas SMT solvers do well on large problems without quantifiers. The line is blurry enough that some ATPs participate in SMT-COMP, while some SMT solvers participate in CASC.
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Benchmarks, competitions, and sources.
The quality of implemented systems has benefited from the existence of a large library of standard benchmark examples—the Thousands of Problems for Theorem Provers (TPTP) Problem Library—as well as from the CADE ATP System Competition (CASC), a yearly competition of first-order systems for many important classes of first-order problems.
Some important systems (all have won at least one CASC competition division) are listed below.
The Theorem Prover Museum is an initiative to conserve the sources of theorem prover systems for future analysis, since they are important cultural/scientific artefacts. It has the sources of many of the systems mentioned above.
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Agent Orange
Agent Orange is a chemical herbicide and defoliant, one of the tactical uses of Rainbow Herbicides. It was used by the U.S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971. The U.S. was strongly influenced by the British who used Agent Orange during the Malayan Emergency. It is a mixture of equal parts of two herbicides, 2,4,5-T and 2,4-D.
Agent Orange was produced in the United States beginning in the late 1940s and was used in industrial agriculture, and was also sprayed along railroads and power lines to control undergrowth in forests. During the Vietnam War, the U.S. military procured over , consisting of a fifty-fifty mixture of 2,4-D and dioxin-contaminated 2,4,5-T. Nine chemical companies produced it: Dow Chemical Company, Monsanto Company, Diamond Shamrock Corporation, Hercules Inc., Thompson Hayward Chemical Co., United States Rubber Company (Uniroyal), Thompson Chemical Co., Hoffman-Taff Chemicals, Inc., and Agriselect.
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The government of Vietnam says that up to four million people in Vietnam were exposed to the defoliant, and as many as three million people have suffered illness because of Agent Orange, while the Vietnamese Red Cross estimates that up to one million people were disabled or have health problems as a result of exposure to Agent Orange. While the United States government has described these figures as unreliable, it has documented cases of leukemia, Hodgkin's lymphoma, and various kinds of cancer in exposed U.S. military veterans. The U.S. Government has not conclusively found either a causal relationship or a plausible biological carcinogenic mechanism for cancers. An epidemiological study done by the Centers for Disease Control and Prevention showed that there was an increase in the rate of birth defects of the children of military personnel who were exposed to Agent Orange. Agent Orange has also caused enormous environmental damage in Vietnam. Over or of forest were defoliated. Defoliants eroded tree cover and seedling forest stock, making reforestation difficult in numerous areas. Animal species diversity is sharply reduced in contrast with unsprayed areas. The environmental destruction caused by this defoliation has been described by Swedish Prime Minister Olof Palme, lawyers, historians and other academics as an ecocide.
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The use of Agent Orange in Vietnam resulted in numerous legal actions. The United Nations ratified United Nations General Assembly Resolution 31/72 and the Environmental Modification Convention. Lawsuits filed on behalf of both U.S. and Vietnamese veterans sought compensation for damages.
Agent Orange was first used by British Commonwealth forces in Malaya during the Malayan Emergency. It was also used by the U.S. military in Laos and Cambodia during the Vietnam War because forests near the border with Vietnam were used by the Viet Cong.
Chemical composition.
The active ingredient of Agent Orange was an equal mixture of two phenoxy herbicides – 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) – in iso-octyl ester form, which contained traces of the dioxin 2,3,7,8-tetrachlorodibenzo-"p"-dioxin (TCDD). TCDD was a trace (typically 2–3 ppm, ranging from 50 ppb to 50 ppm) - but significant - contaminant of Agent Orange.
Toxicology.
TCDD is the most toxic of the dioxins and is classified as a human carcinogen by the U.S. Environmental Protection Agency (EPA). The fat-soluble nature of TCDD causes it to accumulate easily in the food chain, and can enter the body readily through physical contact or ingestion. When TCDD binds to cytoplasmic aryl hydrocarbon receptor (AhR), a transcription factor, the protein translocates to the cell nucleus, where it influences gene expression.
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According to U.S. government reports, if not bound chemically to a biological surface such as soil, leaves or grass, Agent Orange dries quickly after spraying and breaks down within hours to days when exposed to sunlight and is no longer harmful.
Development.
Several herbicides were developed as part of efforts by the United States and the United Kingdom to create herbicidal weapons for use during World War II. These included 2,4-D, 2,4,5-T, MCPA (2-methyl-4-chlorophenoxyacetic acid, 1414B and 1414A, recoded LN-8 and LN-32), and isopropyl phenylcarbamate (1313, recoded LN-33).
In 1943, the United States Department of the Army contracted botanist (and later bioethicist) Arthur Galston, who discovered the defoliants later used in Agent Orange, and his employer University of Illinois Urbana-Champaign to study the effects of 2,4-D and 2,4,5-T on cereal grains (including rice) and broadleaf crops. While a graduate and post-graduate student at the University of Illinois, Galston's research and dissertation focused on finding a chemical means to make soybeans flower and fruit earlier. He discovered both that 2,3,5-triiodobenzoic acid (TIBA) would speed up the flowering of soybeans and that in higher concentrations it would defoliate the soybeans. From these studies arose the concept of using aerial applications of herbicides to destroy enemy crops to disrupt their food supply. In early 1945, the U.S. Army ran tests of various 2,4-D and 2,4,5-T mixtures at the Bushnell Army Airfield in Florida. As a result, the U.S. began a full-scale production of 2,4-D and 2,4,5-T and would have used it against Japan in 1946 during Operation Downfall if the war had continued.
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In the years after the war, the U.S. tested 1,100 compounds, and field trials of the more promising ones were done at British stations in India and Australia, in order to establish their effects in tropical conditions, as well as at the U.S. testing ground in Florida. Between 1950 and 1952, trials were conducted in Tanganyika, at Kikore and Stunyansa, to test arboricides and defoliants under tropical conditions. The chemicals involved were 2,4-D, 2,4,5-T, and endothall (3,6-endoxohexahydrophthalic acid). During 1952–53, the unit supervised the aerial spraying of 2,4,5-T in Kenya to assess the value of defoliants in the eradication of tsetse fly.
Early use.
In Malaya, the local unit of Imperial Chemical Industries researched defoliants as weed killers for rubber plantations. Roadside ambushes by the Malayan National Liberation Army were a danger to the British Commonwealth forces during the Malayan Emergency, several trials were made to defoliate vegetation that might hide ambush sites, but hand removal was found cheaper. A detailed account of how the British experimented with the spraying of herbicides was written by two scientists, E. K. Woodford of Agricultural Research Council's Unit of Experimental Agronomy and H. G. H. Kearns of the University of Bristol.
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After the Malayan Emergency ended in 1960, the U.S. considered the British precedent in deciding that the use of defoliants was a legal tactic of warfare. Secretary of State Dean Rusk advised President John F. Kennedy that the British had established a precedent for warfare with herbicides in Malaya.
Use in the Vietnam War.
In mid-1961, President Ngo Dinh Diem of South Vietnam asked the United States to help defoliate the lush jungle that was providing cover to his enemies. In August of that year, the Republic of Vietnam Air Force conducted herbicide operations with American help. Diem's request launched a policy debate in the White House and the State and Defense Departments. Many U.S. officials supported herbicide operations, pointing out that the British had already used herbicides and defoliants in Malaya during the 1950s. In November 1961, Kennedy authorized the start of Operation Ranch Hand, the codename for the United States Air Force's herbicide program in Vietnam. The herbicide operations were formally directed by the government of South Vietnam.
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During the Vietnam War, between 1962 and 1971, the United States military sprayed nearly of various chemicals – the "rainbow herbicides" and defoliants – in Vietnam, eastern Laos, and parts of Cambodia as part of Operation Ranch Hand, reaching its peak from 1967 to 1969. For comparison purposes, an olympic size pool holds approximately . As the British did in Malaya, the goal of the U.S. was to defoliate rural/forested land, depriving guerrillas of food and concealment and clearing sensitive areas such as around base perimeters and possible ambush sites along roads and canals. Samuel P. Huntington argued that the program was also part of a policy of forced draft urbanization, which aimed to destroy the ability of peasants to support themselves in the countryside, forcing them to flee to the U.S.-dominated cities, depriving the guerrillas of their rural support base.
Agent Orange was usually sprayed from helicopters or from low-flying C-123 Provider aircraft, fitted with sprayers and "MC-1 Hourglass" pump systems and chemical tanks. Spray runs were also conducted from trucks, boats, and backpack sprayers. Altogether, over of Agent Orange were applied.
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The first batch of herbicides was unloaded at Tan Son Nhut Air Base in South Vietnam, on January 9, 1962. U.S. Air Force records show at least 6,542 spraying missions took place over the course of Operation Ranch Hand. By 1971, 12 percent of the total area of South Vietnam had been sprayed with defoliating chemicals, at an average concentration of 13 times the recommended U.S. Department of Agriculture application rate for domestic use. In South Vietnam alone, an estimated of agricultural land was ultimately destroyed. In some areas, TCDD concentrations in soil and water were hundreds of times greater than the levels considered safe by the EPA.
The campaign destroyed of upland and mangrove forests and thousands of square kilometres of crops. Overall, more than 20% of South Vietnam's forests were sprayed at least once over the nine-year period. 3.2% of South Vietnam's cultivated land was sprayed at least once between 1965 and 1971. 90% of herbicide use was directed at defoliation.
The U.S. military began targeting food crops in October 1962, primarily using Agent Blue; the American public was not made aware of the crop destruction programs until 1965 (and it was then believed that crop spraying had begun that spring). In 1965, 42% of all herbicide spraying was dedicated to food crops. In 1965, members of the U.S. Congress were told, "crop destruction is understood to be the more important purpose ... but the emphasis is usually given to the jungle defoliation in public mention of the program." The first official acknowledgment of the programs came from the State Department in March 1966.
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When crops were destroyed, the Viet Cong would compensate for the loss of food by confiscating more food from local villages. Some military personnel reported being told they were destroying crops used to feed guerrillas, only to later discover, most of the destroyed food was actually produced to support the local civilian population. For example, according to Wil Verwey, 85% of the crop lands in Quang Ngai province were scheduled to be destroyed in 1970 alone. He estimated this would have caused famine and left hundreds of thousands of people without food or malnourished in the province. According to a report by the American Association for the Advancement of Science, the herbicide campaign had disrupted the food supply of more than 600,000 people by 1970.
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A study carried out by the Bionetic Research Laboratories between 1965 and 1968 found malformations in test animals caused by 2,4,5-T, a component of Agent Orange. The study was later brought to the attention of the White House in October 1969. Other studies reported similar results and the Department of Defense began to reduce the herbicide operation. On April 15, 1970, it was announced that the use of Agent Orange was suspended. Two brigades of the Americal Division in the summer of 1970 continued to use Agent Orange for crop destruction in violation of the suspension. An investigation led to disciplinary action against the brigade and division commanders because they had falsified reports to hide its use. Defoliation and crop destruction were completely stopped by June 30, 1971.
Health effects.
There are various types of cancer associated with Agent Orange, including chronic B-cell leukemia, Hodgkin's lymphoma, multiple myeloma, non-Hodgkin's lymphoma, prostate cancer, respiratory cancer, lung cancer, and soft tissue sarcomas. Some literature claims that neither Agent Orange nor its contaminants are carcinogenic in humans.
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Vietnamese people.
The government of Vietnam states that 4 million of its citizens were exposed to Agent Orange, and as many as 3 million have suffered illnesses because of it; these figures include their children who were exposed. The Red Cross of Vietnam estimates that up to 1 million people are disabled or have health problems due to Agent Orange contamination. The United States government has challenged these figures as being unreliable.
According to a study by Dr. Nguyen Viet Nhan, children in the areas where Agent Orange was used have been affected and have multiple health problems, including cleft palate, mental disabilities, hernias, and extra fingers and toes. In the 1970s, high levels of dioxin were found in the breast milk of South Vietnamese women, and in the blood of U.S. military personnel who had served in Vietnam. The most affected zones are the mountainous area along Truong Son (Long Mountains) and the border between Vietnam and Cambodia. The affected residents are living in substandard conditions with many genetic diseases.
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In 2006, Anh Duc Ngo and colleagues of the University of Texas Health Science Center published a meta-analysis that exposed a large amount of heterogeneity (different findings) between studies, a finding consistent with a lack of consensus on the issue. Despite this, statistical analysis of the studies they examined resulted in data that the increase in birth defects/relative risk (RR) from exposure to agent orange/dioxin "appears" to be on the order of 3 in Vietnamese-funded studies, but 1.29 in the rest of the world. There is data near the threshold of statistical significance suggesting Agent Orange contributes to still-births, cleft palate, and neural tube defects, with spina bifida being the most statistically significant defect. The large discrepancy in RR between Vietnamese studies and those in the rest of the world has been ascribed to bias in the Vietnamese studies.
Twenty-eight of the former U.S. military bases in Vietnam where the herbicides were stored and loaded onto airplanes may still have high levels of dioxins in the soil, posing a health threat to the surrounding communities. Extensive testing for dioxin contamination has been conducted at the former U.S. airbases in Da Nang, Phù Cát District and Biên Hòa. Some of the soil and sediment on the bases have extremely high levels of dioxin requiring remediation. The Da Nang Air Base has dioxin contamination up to 350 times higher than international recommendations for action. The contaminated soil and sediment continue to affect the citizens of Vietnam, poisoning their food chain and causing illnesses, serious skin diseases and a variety of cancers in the lungs, larynx, and prostate.
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Vietnam veterans.
While in Vietnam, U.S. and Free World Military Assistance Forces soldiers were told not to worry about Agent Orange and were persuaded the chemical was harmless. After returning home, Vietnam veterans from all countries that served began to suspect their ill health or the instances of their wives having miscarriages or children born with birth defects might be related to Agent Orange and the other toxic herbicides to which they had been exposed in Vietnam.
U.S veterans.
U.S. Veterans began to file claims in 1977 to the Department of Veterans Affairs for disability payments for health care for conditions they believed were associated with exposure to Agent Orange, or more specifically, dioxin, but their claims were denied unless they could prove the condition began when they were in the service or within one year of their discharge.
In order to qualify for compensation, U.S. veterans must have served on or near the perimeters of military bases in Thailand during the Vietnam Era, where herbicides were tested and stored outside of Vietnam, veterans who were crew members on C-123 planes flown after the Vietnam War, or were associated with Department of Defense (DoD) projects to test, dispose of, or store herbicides in the U.S.
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By April 1993, the Department of Veterans Affairs had compensated only 486 victims, although it had received disability claims from 39,419 soldiers who had been exposed to Agent Orange while serving in Vietnam.
In a November 2004 Zogby International poll of 987 people, 79% of respondents thought the U.S. chemical companies which produced Agent Orange defoliant should compensate U.S. soldiers who were affected by the toxic chemical used during the war in Vietnam and 51% said they supported compensation for Vietnamese Agent Orange victims.
Australian and New Zealand veterans.
Several official investigations in Australia failed to prove otherwise even though extant American investigations had already established that defoliants were sprayed at U.S. airbases including Bien Hoa Air Base where Australian and New Zealand forces first served before being given their own Tactical area of responsibility (TAOR.) Even then, Australian and New Zealand non-military and military contributions saw personnel from both countries spread over Vietnam such as the hospitals at Bong Son and Qui Nhon, on secondments at various bases, and as flight crew and ground crew for flights into and out of Da Nang Air Base - all areas that were well-documented as having been sprayed.
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It wasn't until a group of Australian veterans produced official military records, maps, and mission data as proof that the TAOR controlled by Australian and New Zealand forces in Vietnam had been sprayed with the chemicals in the presence of personnel that the Australian government was forced to change their stance. Only in 1994 did the Australian government finally admit that it was true that defoliants had been used in areas of Vietnam where Australian forces operated and the effects of these may have been detrimental to some Vietnam veterans and their children.
It was only in 2015 that the official Australian War Memorial accepted rewriting the official history of Australia's involvement in the Vietnam War to acknowledge that Australian soldiers were exposed to defoliants used in Vietnam.
New Zealand was even slower to correct their error, with the government going as far as to deny the legitimacy of the Australian reports in a report called the "McLeod Report" published by Veterans Affairs NZ in 2001 thus infuriating New Zealand veterans and those associated with their cause.
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In 2006 progress was made in the form of a Memorandum of Understanding signed between the New Zealand government, representatives of New Zealand Vietnam veterans, and the Royal New Zealand Returned and Services' Association (RSA) for monetary compensation for New Zealand Vietnam veterans who have conditions as evidence of association with exposure to Agent Orange, as determined by the United States National Academy of Sciences. In 2008 the New Zealand government finally admitted that New Zealanders had in fact been exposed to Agent Orange while serving in Vietnam and the experience was responsible for detrimental health conditions in veterans and their children. Amendments to the memorandum made in 2021 meant that more veterans were eligible for an ex gratia payment of NZ$40,000.
National Academy of Medicine (Institute of Medicine).
Starting in the early 1990s, the federal government directed the Institute of Medicine (IOM), now known as the National Academy of Medicine, to issue reports every 2 years on the health effects of Agent Orange and similar herbicides. First published in 1994 and titled "Veterans and Agent Orange", the IOM reports assess the risk of both cancer and non-cancer health effects. Each health effect is categorized by evidence of association based on available research data. The last update was published in 2016, entitled "Veterans and Agent Orange: Update 2014".
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The report shows sufficient evidence of an association with soft tissue sarcoma; non-Hodgkin lymphoma (NHL); Hodgkin disease; Chronic lymphocytic leukemia (CLL); including hairy cell leukemia and other chronic B-cell leukemias. Limited or suggested evidence of an association was linked with respiratory cancers (lung, bronchus, trachea, larynx); prostate cancer; multiple myeloma; and bladder cancer. Numerous other cancers were determined to have inadequate or insufficient evidence of links to Agent Orange.
The National Academy of Medicine has repeatedly concluded that any evidence suggestive of an association between Agent Orange and prostate cancer is, "limited because chance, bias, and confounding could not be ruled out with confidence."
At the request of the Veterans Administration, the Institute Of Medicine evaluated whether service in these C-123 aircraft could have plausibly exposed soldiers and been detrimental to their health. Their report "Post-Vietnam Dioxin Exposure in Agent Orange-Contaminated C-123 Aircraft" confirmed it.
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U.S. Public Health Service.
Publications by the United States Public Health Service have shown that Vietnam veterans, overall, have increased rates of cancer, and nerve, digestive, skin, and respiratory disorders. The Centers for Disease Control and Prevention notes that in particular, there are higher rates of acute/chronic leukemia, Hodgkin's lymphoma and non-Hodgkin's lymphoma, throat cancer, prostate cancer, lung cancer, colon cancer, Ischemic heart disease, soft tissue sarcoma, and liver cancer. With the exception of liver cancer, these are the same conditions the U.S. Veterans Administration has determined may be associated with exposure to Agent Orange/dioxin and are on the list of conditions eligible for compensation and treatment.
Military personnel who were involved in storage, mixture and transportation (including aircraft mechanics), and actual use of the chemicals were probably among those who received the heaviest exposures. Military members who served on Okinawa also claim to have been exposed to the chemical, but there is no verifiable evidence to corroborate these claims.
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Some studies have suggested that veterans exposed to Agent Orange may be more at risk of developing prostate cancer and potentially more than twice as likely to develop higher-grade, more lethal prostate cancers. However, a critical analysis of these studies and 35 others consistently found that there was no significant increase in prostate cancer incidence or mortality in those exposed to Agent Orange or 2,3,7,8-tetracholorodibenzo-"p"-dioxin.
U.S. Veterans of Laos and Cambodia.
During the Vietnam War, the United States fought the North Vietnamese, and their allies, in Laos and Cambodia, including heavy bombing campaigns. They also sprayed large quantities of Agent Orange in each of those countries. According to one estimate, the U.S. dropped in Laos and in Cambodia. Because Laos and Cambodia were both officially neutral during the Vietnam War, the U.S. attempted to keep secret its military operations in those countries, from the American population and has largely avoided compensating American veterans and CIA personnel stationed in Cambodia and Laos who suffered permanent injuries as a result of exposure to Agent Orange there.
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One noteworthy exception, according to the U.S. Department of Labor, is a claim filed with the CIA by an employee of "a self-insured contractor to the CIA that was no longer in business." The CIA advised the Department of Labor that it "had no objections" to paying the claim and Labor accepted the claim for payment:
Ecological impact.
About 17.8% or of the total forested area of Vietnam was sprayed during the war, which disrupted the ecological equilibrium. The persistent nature of dioxins, erosion caused by loss of tree cover, and loss of seedling forest stock meant that reforestation was difficult (or impossible) in many areas. Many defoliated forest areas were quickly invaded by aggressive pioneer species (such as bamboo and cogon grass), making forest regeneration difficult and unlikely. Animal species diversity was also impacted; in one study a Harvard biologist found 24 species of birds and 5 species of mammals in a sprayed forest, while in two adjacent sections of unsprayed forest there were, respectively, 145 and 170 species of birds and 30 and 55 species of mammals.
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Dioxins from Agent Orange have persisted in the Vietnamese environment since the war, settling in the soil and sediment and entering the food chain through animals and fish which feed in the contaminated areas. The movement of dioxins through the food web has resulted in bioconcentration and biomagnification. The areas most heavily contaminated with dioxins are former U.S. air bases.
Sociopolitical impact.
American policy during the Vietnam War was to destroy crops, accepting the sociopolitical impact that that would have. The RAND Corporation's "Memorandum 5446-ISA/ARPA" states: "the fact that the VC [the Vietcong] obtain most of their food from the neutral rural population dictates the destruction of civilian crops ... if they are to be hampered by the crop destruction program, it will be necessary to destroy large portions of the rural economy – probably 50% or more". Crops were deliberately sprayed with Agent Orange and areas were bulldozed clear of vegetation forcing many rural civilians to cities.
Legal and diplomatic proceedings.
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International.
The extensive environmental damage that resulted from usage of the herbicide prompted the United Nations to pass Resolution 31/72 and ratify the Environmental Modification Convention. Many states do not regard this as a complete ban on the use of herbicides and defoliants in warfare, but it does require case-by-case consideration. Article 2(4) of Protocol III of the Convention on Certain Conventional Weapons contains the "Jungle Exception", which prohibits states from attacking forests or jungles "except if such natural elements are used to cover, conceal or camouflage combatants or military objectives or are military objectives themselves". This exception voids any protection of any military and civilian personnel from a napalm attack or something like Agent Orange, and it has been argued that it was clearly designed to cover situations like U.S. tactics in Vietnam.
Class action lawsuit.
Since at least 1978, several lawsuits have been filed against the companies which produced Agent Orange, among them Dow Chemical, Monsanto, and Diamond Shamrock. In 1978, army veteran Paul Reutershan sued Dow Chemical for $10 million, after he was diagnosed with terminal cancer that he believed was a result of Agent Orange exposure. After Reutershan died in December 1978, his attorneys added additional plaintiffs and refiled the lawsuit as a class action. That lawsuit would eventually represent thousands of veterans, and was considered one of the largest and most complex lawsuits ever brought in the US at that time.
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Attorney Hy Mayerson was an early pioneer in Agent Orange litigation, working with environmental attorney Victor Yannacone in 1980 on the first class-action suits against wartime manufacturers of Agent Orange. In meeting Dr. Ronald A. Codario, one of the first civilian doctors to see affected patients, Mayerson, so impressed by the fact a physician would show so much interest in a Vietnam veteran, forwarded more than a thousand pages of information on Agent Orange and the effects of dioxin on animals and humans to Codario's office the day after he was first contacted by the doctor. The corporate defendants sought to escape culpability by blaming everything on the U.S. government.
In 1980, Mayerson, with Sgt. Charles E. Hartz as their principal client, filed the first U.S. Agent Orange class-action lawsuit in Pennsylvania, for the injuries military personnel in Vietnam suffered through exposure to toxic dioxins in the defoliant. Attorney Mayerson co-wrote the brief that certified the Agent Orange Product Liability action as a class action, the largest ever filed as of its filing. Hartz's deposition was one of the first ever taken in America, and the first for an Agent Orange trial, for the purpose of preserving testimony at trial, as it was understood that Hartz would not live to see the trial because of a brain tumor that began to develop while he was a member of Tiger Force, special forces, and LRRPs in Vietnam. The firm also located and supplied critical research to the veterans' lead expert, Dr. Codario, including about 100 articles from toxicology journals dating back more than a decade, as well as data about where herbicides had been sprayed, what the effects of dioxin had been on animals and humans, and every accident in factories where herbicides were produced or dioxin was a contaminant of some chemical reaction.
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The chemical companies involved denied that there was a link between Agent Orange and the veterans' medical problems. However, on May 7, 1984, seven chemical companies settled the class-action suit out of court just hours before jury selection was to begin. The companies agreed to pay $180 million as compensation if the veterans dropped all claims against them. Slightly over 45% of the sum was ordered to be paid by Monsanto alone. Many veterans who were victims of Agent Orange exposure were outraged the case had been settled instead of going to court and felt they had been betrayed by the lawyers. "Fairness Hearings" were held in five major American cities, where veterans and their families discussed their reactions to the settlement and condemned the actions of the lawyers and courts, demanding the case be heard before a jury of their peers. Federal Judge Jack B. Weinstein refused the appeals, claiming the settlement was "fair and just". By 1989, the veterans' fears were confirmed when it was decided how the money from the settlement would be paid out. A totally disabled Vietnam veteran would receive a maximum of $12,000 spread out over the course of 10 years. Furthermore, by accepting the settlement payments, disabled veterans would become ineligible for many state benefits that provided far more monetary support than the settlement, such as food stamps, public assistance, and government pensions. A widow of a Vietnam veteran who died of Agent Orange exposure would receive $3,700.
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In 2004, Monsanto spokesman Jill Montgomery said Monsanto should not be liable at all for injuries or deaths caused by Agent Orange, saying: "We are sympathetic with people who believe they have been injured and understand their concern to find the cause, but reliable scientific evidence indicates that Agent Orange is not the cause of serious long-term health effects."
On 22 August 2024, the Court of Appeal of Paris dismissed an appeal filed by Tran To Nga against 14 US corporations that supplied Agent Orange for the US army during the war in Vietnam. The lawyers said that Nga will take her case to France's highest appeals court. Only military veterans from the United States and its allies in the war have won compensation so far. Some of the agrochemical companies in the U.S. have compensated U.S. veterans, but not to Vietnamese victims.
New Jersey Agent Orange Commission.
In 1980, New Jersey created the New Jersey Agent Orange Commission, the first state commission created to study its effects. The commission's research project in association with Rutgers University was called "The Pointman Project". It was disbanded by Governor Christine Todd Whitman in 1996. During the first phase of the project, commission researchers devised ways to determine trace dioxin levels in blood. Prior to this, such levels could only be found in the adipose (fat) tissue. The project studied dioxin (TCDD) levels in blood as well as in adipose tissue in a small group of Vietnam veterans who had been exposed to Agent Orange and compared them to those of a matched control group; the levels were found to be higher in the exposed group. The second phase of the project continued to examine and compare dioxin levels in various groups of Vietnam veterans, including Soldiers, Marines, and Brownwater Naval personnel.
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U.S. Congress.
In 1991, Congress enacted the Agent Orange Act, giving the Department of Veterans Affairs the authority to declare certain conditions "presumptive" to exposure to Agent Orange/dioxin, making these veterans who served in Vietnam eligible to receive treatment and compensation for these conditions. The same law required the National Academy of Sciences to periodically review the science on dioxin and herbicides used in Vietnam to inform the Secretary of Veterans Affairs about the strength of the scientific evidence showing association between exposure to Agent Orange/dioxin and certain conditions. The authority for the National Academy of Sciences reviews and addition of any new diseases to the presumptive list by the VA expired in 2015 under the sunset clause of the Agent Orange Act of 1991. Through this process, the list of 'presumptive' conditions has grown since 1991, and currently the U.S. Department of Veterans Affairs has listed prostate cancer, respiratory cancers, multiple myeloma, type II diabetes mellitus, Hodgkin's disease, non-Hodgkin's lymphoma, soft tissue sarcoma, chloracne, porphyria cutanea tarda, peripheral neuropathy, chronic lymphocytic leukemia, and spina bifida in children of veterans exposed to Agent Orange as conditions associated with exposure to the herbicide. This list now includes B cell leukemias, such as hairy cell leukemia, Parkinson's disease and ischemic heart disease, these last three having been added on August 31, 2010. Several highly placed individuals in government are voicing concerns about whether some of the diseases on the list should, in fact, actually have been included.
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In 2011, an appraisal of the 20-year long "Air Force Health Study" that began in 1982 indicates that the results of the AFHS as they pertain to Agent Orange, do not provide evidence of disease in the Operation Ranch Hand veterans caused by "their elevated levels of exposure to Agent Orange".
The VA initially denied the applications of post-Vietnam C-123 aircrew veterans because as veterans without "boots on the ground" service in Vietnam, they were not covered under VA's interpretation of "exposed". In June 2015, the Secretary of Veterans Affairs issued an Interim final rule providing presumptive service connection for post-Vietnam C-123 aircrews, maintenance staff and aeromedical evacuation crews. The VA now provides medical care and disability compensation for the recognized list of Agent Orange illnesses.
U.S.–Vietnamese government negotiations.
In 2002, Vietnam and the U.S. held a joint conference on Human Health and Environmental Impacts of Agent Orange. Following the conference, the U.S. National Institute of Environmental Health Sciences (NIEHS) began scientific exchanges between the U.S. and Vietnam, and began discussions for a joint research project on the human health impacts of Agent Orange. These negotiations broke down in 2005, when neither side could agree on the research protocol and the research project was canceled. More progress has been made on the environmental front. In 2005, the first U.S.-Vietnam workshop on remediation of dioxin was held.
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Starting in 2005, the EPA began to work with the Vietnamese government to measure the level of dioxin at the Da Nang Air Base. Also in 2005, the Joint Advisory Committee on Agent Orange, made up of representatives of Vietnamese and U.S. government agencies, was established. The committee has been meeting yearly to explore areas of scientific cooperation, technical assistance and environmental remediation of dioxin.
A breakthrough in the diplomatic stalemate on this issue occurred as a result of United States President George W. Bush's state visit to Vietnam in November 2006. In the joint statement, President Bush and President Triet agreed "further joint efforts to address the environmental contamination near former dioxin storage sites would make a valuable contribution to the continued development of their bilateral relationship." On May 25, 2007, President Bush signed the U.S. Troop Readiness, Veterans' Care, Katrina Recovery, and Iraq Accountability Appropriations Act, 2007 into law for the wars in Iraq and Afghanistan that included an earmark of $3 million specifically for funding for programs for the remediation of dioxin 'hotspots' on former U.S. military bases, and for public health programs for the surrounding communities; some authors consider this to be completely inadequate, pointing out that the Da Nang Airbase alone will cost $14 million to clean up, and that three others are estimated to require $60 million for cleanup. The appropriation was renewed in the fiscal year 2009 and again in FY 2010. An additional $12 million was appropriated in the fiscal year 2010 in the Supplemental Appropriations Act and a total of $18.5 million appropriated for fiscal year 2011.
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Secretary of State Hillary Clinton stated during a visit to Hanoi in October 2010 that the U.S. government would begin work on the clean-up of dioxin contamination at the Da Nang Airbase. In June 2011, a ceremony was held at Da Nang airport to mark the start of U.S.-funded decontamination of dioxin hotspots in Vietnam. Thirty-two million dollars has so far been allocated by the U.S. Congress to fund the program. A $43 million project began in the summer of 2012, as Vietnam and the U.S. forge closer ties to boost trade and counter China's rising influence in the disputed South China Sea.
Vietnamese victims class action lawsuit in U.S. courts.
On January 31, 2004, a victim's rights group, the Vietnam Association for Victims of Agent Orange/dioxin (VAVA), filed a lawsuit in the United States District Court for the Eastern District of New York in Brooklyn, against several U.S. companies for liability in causing personal injury, by developing, and producing the chemical, and claimed that the use of Agent Orange violated the 1907 Hague Convention on Land Warfare, 1925 Geneva Protocol, and the 1949 Geneva Conventions.
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companies for liability in causing personal injury, by developing, and producing the chemical, and claimed that the use of Agent Orange violated the 1907 Hague Convention on Land Warfare, 1925 Geneva Protocol, and the 1949 Geneva Conventions. Dow Chemical and Monsanto were the two largest producers of Agent Orange for the U.S. military and were named in the suit, along with the dozens of other companies (Diamond Shamrock, Uniroyal, Thompson Chemicals, Hercules, etc.). On March 10, 2005, Judge Jack B. Weinstein of the Eastern District – who had presided over the 1984 U.S. veterans class-action lawsuit – dismissed the lawsuit, ruling there was no legal basis for the plaintiffs' claims. He concluded Agent Orange was not considered a poison under international humanitarian law at the time of its use by the U.S.; the U.S. was not prohibited from using it as a herbicide; and the companies which produced the substance were not liable for the method of its use by the government.
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Author and activist George Jackson had written previously that:If the Americans were guilty of war crimes for using Agent Orange in Vietnam, then the British would be also guilty of war crimes as well since they were the first nation to deploy the use of herbicides and defoliants in warfare and used them on a large scale throughout the Malayan Emergency. Not only was there no outcry by other states in response to the United Kingdom's use, but the U.S. viewed it as establishing a precedent for the use of herbicides and defoliants in jungle warfare.The U.S. government was also not a party in the lawsuit because of sovereign immunity, and the court ruled the chemical companies, as contractors of the U.S. government, shared the same immunity. The case was appealed and heard by the Second Circuit Court of Appeals in Manhattan on June 18, 2007. Three judges on the court upheld Weinstein's ruling to dismiss the case. They ruled that, though the herbicides contained a dioxin (a known poison), they were not intended to be used as a poison on humans. Therefore, they were not considered a chemical weapon and thus not a violation of international law. A further review of the case by the entire panel of judges of the Court of Appeals also confirmed this decision. The lawyers for the Vietnamese filed a petition to the U.S. Supreme Court to hear the case. On March 2, 2009, the Supreme Court denied certiorari and declined to reconsider the ruling of the Court of Appeals.
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Help for those affected in Vietnam.
To assist those who have been affected by Agent Orange/dioxin, the Vietnamese have established "peace villages", which each host between 50 and 100 victims, giving them medical and psychological help. As of 2006, there were 11 such villages, thus granting some social protection to fewer than a thousand victims. U.S. veterans of the war in Vietnam and individuals who are aware and sympathetic to the impacts of Agent Orange have supported these programs in Vietnam. An international group of veterans from the U.S. and its allies during the Vietnam War working with their former enemy—veterans from the Vietnam Veterans Association—established the Vietnam Friendship Village outside of Hanoi.
The center provides medical care, rehabilitation and vocational training for children and veterans from Vietnam who have been affected by Agent Orange. In 1998, The Vietnam Red Cross established the Vietnam Agent Orange Victims Fund to provide direct assistance to families throughout Vietnam that have been affected. In 2003, the Vietnam Association of Victims of Agent Orange (VAVA) was formed. In addition to filing the lawsuit against the chemical companies, VAVA provides medical care, rehabilitation services and financial assistance to those injured by Agent Orange.
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The Vietnamese government provides small monthly stipends to more than 200,000 Vietnamese believed affected by the herbicides; this totaled $40.8 million in 2008. The Vietnam Red Cross has raised more than $22 million to assist the ill or disabled, and several U.S. foundations, United Nations agencies, European governments and nongovernmental organizations have given a total of about $23 million for site cleanup, reforestation, health care and other services to those in need.
Vuong Mo of the Vietnam News Agency described one of the centers:
May is 13, but she knows nothing, is unable to talk fluently, nor walk with ease due to for her bandy legs. Her father is dead and she has four elder brothers, all mentally retarded ... The students are all disabled, retarded and of different ages. Teaching them is a hard job. They are of the 3rd grade but many of them find it hard to do the reading. Only a few of them can. Their pronunciation is distorted due to their twisted lips and their memory is quite short. They easily forget what they've learned ... In the Village, it is quite hard to tell the kids' exact ages. Some in their twenties have a physical statures as small as the 7- or 8-years-old. They find it difficult to feed themselves, much less have mental ability or physical capacity for work. No one can hold back the tears when seeing the heads turning round unconsciously, the bandy arms managing to push the spoon of food into the mouths with awful difficulty ... Yet they still keep smiling, singing in their great innocence, at the presence of some visitors, craving for something beautiful.
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On June 16, 2010, members of the U.S.-Vietnam Dialogue Group on Agent Orange/Dioxin unveiled a comprehensive 10-year Declaration and Plan of Action to address the toxic legacy of Agent Orange and other herbicides in Vietnam. The Plan of Action was released as an Aspen Institute publication and calls upon the U.S. and Vietnamese governments to join with other governments, foundations, businesses, and nonprofits in a partnership to clean up dioxin "hot spots" in Vietnam and to expand humanitarian services for people with disabilities there. On September 16, 2010, Senator Patrick Leahy acknowledged the work of the Dialogue Group by releasing a statement on the floor of the United States Senate. The statement urges the U.S. government to take the Plan of Action's recommendations into account in developing a multi-year plan of activities to address the Agent Orange/dioxin legacy.
Use outside of Vietnam.
Australia.
In 2008, Australian researcher Jean Williams claimed that cancer rates in Innisfail, Queensland, were 10 times higher than the state average because of secret testing of Agent Orange by the Australian military scientists during the Vietnam War. Williams, who had won the Order of Australia medal for her research on the effects of chemicals on U.S. war veterans, based her allegations on Australian government reports found in the Australian War Memorial's archives. A former soldier, Ted Bosworth, backed up the claims, saying that he had been involved in the secret testing. Neither Williams nor Bosworth have produced verifiable evidence to support their claims. The Queensland health department determined that cancer rates in Innisfail were no higher than those in other parts of the state.
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Canada.
The U.S. military, with the permission of the Canadian government, tested herbicides, including Agent Orange, in the forests near Canadian Forces Base Gagetown in New Brunswick. In 2007, the government of Canada offered a one-time ex gratia payment of $20,000 as compensation for Agent Orange exposure at CFB Gagetown. On July 12, 2005, Merchant Law Group, on behalf of over 1,100 Canadian veterans and civilians who were living in and around CFB Gagetown, filed a lawsuit to pursue class action litigation concerning Agent Orange and Agent Purple with the Federal Court of Canada. On August 4, 2009, the case was rejected by the court, citing lack of evidence.
In 2007, the Canadian government announced that a research and fact-finding program initiated in 2005 had found the base was safe. A legislative commission in the State of Maine found in 2024 that the Canadian investigation was "incorrect, biased, and based upon, in some cases, incomplete data and poor study design—at times exacerbated by the rapid period in which these reports were required to be conducted and issued."
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On February 17, 2011, the "Toronto Star" revealed that Agent Orange had been employed to clear extensive plots of Crown land in Northern Ontario. The "Toronto Star" reported that, "records from the 1950s, 1960s and 1970s show forestry workers, often students and junior rangers, spent weeks at a time as human markers holding red, helium-filled balloons on fishing lines while low-flying planes sprayed toxic herbicides including an infamous chemical mixture known as Agent Orange on the brush and the boys below." In response to the "Toronto Star" article, the Ontario provincial government launched a probe into the use of Agent Orange.
Guam.
An analysis of chemicals present in the island's soil, together with resolutions passed by Guam's legislature, suggest that Agent Orange was among the herbicides routinely used on and around Andersen Air Force Base and Naval Air Station Agana. Despite the evidence, the Department of Defense continues to deny that Agent Orange was stored or used on Guam. Several Guam veterans have collected evidence to assist in their disability claims for direct exposure to dioxin containing herbicides such as 2,4,5-T which are similar to the illness associations and disability coverage that has become standard for those who were harmed by the same chemical contaminant of Agent Orange used in Vietnam.
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South Korea.
Agent Orange was used in South Korea in the late 1960s and in 1999, about 20,000 South Koreans filed two separated lawsuits against U.S. companies, seeking more than $5 billion in damages. After losing a decision in 2002, they filed an appeal. In January 2006, the South Korean Appeals Court ordered Dow Chemical and Monsanto to pay $62 million in compensation to about 6,800 people. The ruling acknowledged that "the defendants failed to ensure safety as the defoliants manufactured by the defendants had higher levels of dioxins than standard", and, quoting the U.S. National Academy of Science report, declared that there was a "causal relationship" between Agent Orange and a range of diseases, including several cancers. The judges failed to acknowledge "the relationship between the chemical and peripheral neuropathy, the disease most widespread among Agent Orange victims".
In 2011, the United States local press KPHO-TV in Phoenix, Arizona, alleged that in 1978 that the United States Army had buried 250 55-gallon drums () of Agent Orange in Camp Carroll, the U.S. Army base located in Gyeongsangbuk-do, South Korea.
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Currently, veterans who provide evidence meeting VA requirements for service in Vietnam and who can medically establish that anytime after this 'presumptive exposure' they developed any medical problems on the list of presumptive diseases, may receive compensation from the VA. Certain veterans who served in South Korea and are able to prove they were assigned to certain specified around the Korean Demilitarized Zone, during a specific time frame are afforded similar presumption.
New Zealand.
The use of Agent Orange has been controversial in New Zealand, because of the exposure of New Zealand troops in Vietnam and because of the production of herbicide used in Agent Orange which has been alleged at various times to have been exported for use in the Vietnam War and to other users by the Ivon Watkins-Dow chemical plant in Paritutu, New Plymouth. What is fact is that from 1962 until 1987, 2,4,5T herbicide was manufactured at the Ivon Watkins-Dow plant for domestic use in New Zealand. It was widely used by farmers and in New Zealand agriculture as a weed killer. This fact was the basis of a 2005 New Zealand Media story that claimed that the herbicide had been allegedly exported to U.S. military bases in South East Asia. However the claim was not proven, a fact which the Media did not subsequently report. There have been continuing claims, as yet unproven, that the suburb of Paritutu has also been polluted. However, the agriscience company Corteva (which split from DowDupont in 2019) agreed to clean up the Paritutu site in September 2022.
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Philippines.
Herbicide persistence studies of Agents Orange and White were conducted in the Philippines.
Johnston Atoll.
The U.S. Air Force operation to remove Herbicide Orange from Vietnam in 1972 was named Operation Pacer IVY, while the operation to destroy the Agent Orange stored at Johnston Atoll in 1977 was named Operation Pacer HO. Operation Pacer IVY collected Agent Orange in South Vietnam and removed it in 1972 aboard the ship MV Transpacific for storage on Johnston Atoll. The EPA reports that of Herbicide Orange was stored at Johnston Island in the Pacific and at Gulfport, Mississippi.
Research and studies were initiated to find a safe method to destroy the materials, and it was discovered they could be incinerated safely under special conditions of temperature and dwell time. However, these herbicides were expensive, and the Air Force wanted to resell its surplus instead of dumping it at sea. Among many methods tested, a possibility of salvaging the herbicides by reprocessing and filtering out the TCDD contaminant with carbonized (charcoaled) coconut fibers. This concept was then tested in 1976 and a pilot plant constructed at Gulfport.
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From July to September 1977 during Operation Pacer HO, the entire stock of Agent Orange from both Herbicide Orange storage sites at Gulfport and Johnston Atoll was subsequently incinerated in four separate burns in the vicinity of Johnston Island aboard the Dutch-owned waste incineration ship .
As of 2004, some records of the storage and disposition of Agent Orange at Johnston Atoll have been associated with the historical records of Operation Red Hat.
Okinawa, Japan.
There have been dozens of reports in the press about use and/or storage of military formulated herbicides on Okinawa that are based upon statements by former U.S. service members that had been stationed on the island, photographs, government records, and unearthed storage barrels. The U.S. Department of Defense has denied these allegations with statements by military officials and spokespersons, as well as a January 2013 report authored by Dr. Alvin Young that was released in April 2013.
In particular, the 2013 report rebuts articles written by journalist Jon Mitchell as well as a statement from "An Ecological Assessment of Johnston Atoll" a 2003 publication produced by the United States Army Chemical Materials Agency that states, "in 1972, the U.S. Air Force also brought about 25,000 200L drums () of the chemical, Herbicide Orange (HO) to Johnston Island that originated from Vietnam and was stored on Okinawa." The 2013 report states: "The authors of the [2003] report were not DoD employees, nor were they likely familiar with the issues surrounding Herbicide Orange or its actual history of transport to the Island." and detailed the transport phases and routes of Agent Orange from Vietnam to Johnston Atoll, none of which included Okinawa.
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Further official confirmation of restricted (dioxin containing) herbicide storage on Okinawa appeared in a 1971 Fort Detrick report titled "Historical, Logistical, Political and Technical Aspects of the Herbicide/Defoliant Program", which mentions that the environmental statement should consider "Herbicide stockpiles elsewhere in PACOM (Pacific Command) U.S. Government restricted materials Thailand and Okinawa (Kadena AFB)." The 2013 DoD report says that the environmental statement urged by the 1971 report was published in 1974 as "The Department of Air Force Final Environmental Statement", and that the latter did not find Agent Orange was held in either Thailand or Okinawa.
Thailand.
Agent Orange was tested by the United States in Thailand during the Vietnam War. In 1999, buried drums were uncovered and confirmed to be Agent Orange. Workers who uncovered the drums fell ill while upgrading the airport near Hua Hin District, 100 km south of Bangkok. Vietnam-era veterans whose service involved duty on or near the perimeters of military bases in Thailand anytime between February 28, 1961, and May 7, 1975, may have been exposed to herbicides and may qualify for VA benefits.
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A declassified Department of Defense report written in 1973, suggests that there was a significant use of herbicides on the fenced-in perimeters of military bases in Thailand to remove foliage that provided cover for enemy forces. In 2013, the VA determined that herbicides used on the Thailand base perimeters may have been tactical and procured from Vietnam, or a strong, commercial type resembling tactical herbicides.
United States.
The University of Hawaiʻi has acknowledged extensive testing of Agent Orange on behalf of the United States Department of Defense in Hawaii along with mixtures of Agent Orange on Hawaii Island in 1966 and on Kaua'i Island in 1967–1968; testing and storage in other U.S. locations has been documented by the United States Department of Veterans Affairs.
In 1971, the C-123 aircraft used for spraying Agent Orange were returned to the United States and assigned various East Coast USAF Reserve squadrons, and then employed in traditional airlift missions between 1972 and 1982. In 1994, testing by the Air Force identified some former spray aircraft as "heavily contaminated" with dioxin residue. Inquiries by aircrew veterans in 2011 brought a decision by the U.S. Department of Veterans Affairs opining that not enough dioxin residue remained to injure these post-Vietnam War veterans. On 26 January 2012, the U.S. Center For Disease Control's Agency for Toxic Substances and Disease Registry challenged this with their finding that former spray aircraft were indeed contaminated and the aircrews exposed to harmful levels of dioxin. In response to veterans' concerns, the VA in February 2014 referred the C-123 issue to the Institute of Medicine for a special study, with results released on January 9, 2015.
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In 1978, the EPA suspended spraying of Agent Orange in national forests.
Agent Orange was sprayed on thousands of acres of brush in the Tennessee Valley for 15 years before scientists discovered the herbicide was dangerous. Monroe County, Tennessee, is one of the locations known to have been sprayed according to the Tennessee Valley Authority. Forty-four remote acres were sprayed with Agent Orange along power lines throughout the National Forest.
In 1983, New Jersey declared a Passaic River production site to be a state of emergency. The dioxin pollution in the Passaic River dates back to the Vietnam era, when Diamond Alkali manufactured it in a factory along the river. The tidal river carried dioxin upstream and down, contaminating a stretch of riverbed in one of New Jersey's most populous areas.
A December 2006 Department of Defense report listed Agent Orange testing, storage, and disposal sites at 32 locations throughout the United States, Canada, Thailand, Puerto Rico, Korea, and in the Pacific Ocean. The Veteran Administration has also acknowledged that Agent Orange was used domestically by U.S. forces in test sites throughout the United States. Eglin Air Force Base in Florida was one of the primary testing sites throughout the 1960s.
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Cleanup programs.
In February 2012, Monsanto agreed to settle a case covering dioxin contamination around a plant in Nitro, West Virginia, that had manufactured Agent Orange. Monsanto agreed to pay up to $9 million for cleanup of affected homes, $84 million for medical monitoring of people affected, and the community's legal fees.
On 9 August 2012, the United States and Vietnam began a cooperative cleaning up of the toxic chemical on part of Da Nang International Airport, marking the first time the U.S. government has been involved in cleaning up Agent Orange in Vietnam. Danang was the primary storage site of the chemical. Two other cleanup sites the United States and Vietnam are looking at is Biên Hòa, in the southern province of Đồng Nai is a hotspot for dioxin and so is Phù Cát airport in the central province of Bình Định, says U.S. Ambassador to Vietnam David Shear. According to the Vietnamese newspaper "Nhân Dân", the U.S. government provided $41 million to the project. As of 2017, some of soil have been cleaned.
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The Naval Construction Battalion Center at Gulfport, Mississippi was the largest storage site in the United States for Agent Orange. It was about in size and was still being cleaned up in 2013.
In 2016, the EPA laid out its plan for cleaning up an stretch of the Passaic River in New Jersey, with an estimated cost of $1.4 billion. The contaminants reached to Newark Bay and other waterways, according to the EPA, which has designated the area a Superfund site. Since destruction of the dioxin requires high temperatures over , the destruction process is energy intensive.
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Astronomical year numbering
Astronomical year numbering is based on AD/CE year numbering, but follows normal decimal integer numbering more strictly. Thus, it has a year 0; the years before that are designated with negative numbers and the years after that are designated with positive numbers. Astronomers use the Julian calendar for years before 1582, including the year 0, and the Gregorian calendar for years after 1582, as exemplified by Jacques Cassini (1740), Simon Newcomb (1898) and Fred Espenak (2007).
The prefix AD and the suffixes CE, BC or BCE (Common Era, Before Christ or Before Common Era) are dropped. The year 1 BC/BCE is numbered 0, the year 2 BC is numbered −1, and in general the year "n" BC/BCE is numbered "−("n" − 1)" (a negative number equal to 1 − "n"). The numbers of AD/CE years are not changed and are written with either no sign or a positive sign; thus in general "n" AD/CE is simply "n" or +"n". For normal calculation a number zero is often needed, here most notably when calculating the number of years in a period that spans the epoch; the end years need only be subtracted from each other.
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The system is so named due to its use in astronomy. Few other disciplines outside history deal with the time before year 1, some exceptions being dendrochronology, archaeology and geology, the latter two of which use 'years before the present'. Although the absolute numerical values of astronomical and historical years only differ by one before year 1, this difference is critical when calculating astronomical events like eclipses or planetary conjunctions to determine when historical events which mention them occurred.
Usage of the year zero.
In his Rudolphine Tables (1627), Johannes Kepler used a prototype of year zero which he labeled "Christi" (Christ's) between years labeled "Ante Christum" (Before Christ) and "Post Christum" (After Christ) on the mean motion tables for the Sun, Moon, Saturn, Jupiter, Mars, Venus and Mercury. In 1702, the French astronomer Philippe de la Hire used a year he labeled at the end of years labeled "ante Christum" (BC), and immediately before years labeled "post Christum" (AD) on the mean motion pages in his "Tabulæ Astronomicæ", thus adding the designation "0" to Kepler's "Christi". Finally, in 1740 the French astronomer Jacques Cassini , who is traditionally credited with the invention of year zero, completed the transition in his "Tables astronomiques", simply labeling this year "0", which he placed at the end of Julian years labeled "avant Jesus-Christ" (before Jesus Christ or BC), and immediately before Julian years labeled "après Jesus-Christ" (after Jesus Christ or AD).
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Cassini gave the following reasons for using a year 0:
Fred Espenak of NASA lists 50 phases of the Moon within year 0, showing that it is a full year, not an instant in time. Jean Meeus gives the following explanation:
Signed years without the year zero.
Although he used the usual French terms "avant J.-C." (before Jesus Christ) and "après J.-C." (after Jesus Christ) to label years elsewhere in his book, the Byzantine historian Venance Grumel (1890–1967) used negative years (identified by a minus sign, −) to label BC years and unsigned positive years to label AD years in a table. He may have done so to save space and he put no year 0 between them.
Version 1.0 of the XML Schema language, often used to describe data interchanged between computers in XML, includes built-in primitive datatypes date and dateTime. Although these are defined in terms of ISO 8601 which uses the proleptic Gregorian calendar and therefore should include a year 0, the XML Schema specification states that there is no year zero. Version 1.1 of the defining recommendation realigned the specification with ISO 8601 by including a year zero, despite the problems arising from the lack of backward compatibility.
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Adam of Bremen
Adam of Bremen (; ; before 1050 – 12 October 1081/1085) was a German medieval chronicler. He lived and worked in the second half of the eleventh century. Adam is most famous for his chronicle "Gesta Hammaburgensis ecclesiae pontificum" ("Deeds of Bishops of the Hamburg Church"). He was "one of the foremost historians and early ethnographers of the medieval period".
In his chronicle, he included a chapter mentioning the Norse outpost of Vinland, and was thus the first European to write about the New World.
Life.
Little is known of his life other than hints from his own chronicles. He is believed to have come from Meissen, then its own margravate. The dates of his birth and death are uncertain, but he was probably born before 1050 and died on 12 October of an unknown year (possibly 1081, at the latest 1085). From his chronicles, it is apparent that he was familiar with a number of authors. The honorary name of "Magister Adam" shows that he had passed through all the stages of a higher education. It is probable that he was taught at the "Magdeburger Domschule".
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In 1066 or 1067, he was invited by Archbishop Adalbert von Hamburg-Bremen to join the Church of Bremen. Adam was accepted among the capitulars of Bremen, and by 1069 he appeared as director of the Bremen Cathedral's school. Soon thereafter he began to write the history of Bremen/Hamburg and of the northern lands in his "Gesta".
His position and the missionary activity of the church of Bremen allowed him to gather information on the history and the geography of Northern Germany. A stay at the court of Sweyn II of Denmark gave him the opportunity to find information about the history and geography of Denmark and the other Scandinavian countries. Among other things he wrote about in Scandinavia were the sailing passages across Øresund such as today's Helsingør–Helsingborg ferry route.
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Ab urbe condita
Ab urbe condita (; 'from the founding of the City'), or (; 'in the year since the city's founding'), abbreviated as AUC or AVC, expresses a date in years since 753 BC, the traditional founding of Rome. It is an expression used in antiquity and by classical historians to refer to a given year in Ancient Rome. In reference to the traditional year of the foundation of Rome, the year 1 BC would be written AUC 753, whereas AD 1 would be AUC 754. The foundation of the Roman Empire in 27 BC would be AUC 727. The current year AD would be AUC .
Usage of the term was more common during the Renaissance, when editors sometimes added AUC to Roman manuscripts they published, giving the false impression that the convention was commonly used in antiquity. In reality, the dominant method of identifying years in Roman times was to name the two consuls who held office that year. In late antiquity, regnal years were also in use, as in Roman Egypt during the Diocletian era after AD 293, and in the Byzantine Empire from AD 537, following a decree by Justinian.
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Use.
Prior to the Roman state's adoption of the Varronian chronology – created by Titus Pomponius Atticus and Marcus Terentius Varro – there were many different dates posited for when the city was founded. This state of confusion required picking a canonical founding date for one to use an AUC date. The Varronian chronology, constructed from fragmentary sources and demonstrably about four years off of absolute events , placed the founding of the city on 21 April 753 BC. This date, likely arrived at by mechanical calculation but accepted with a variance of one year by the Augustan-era , has become the traditional date.
From the time of Claudius () onward, this calculation superseded other contemporary calculations. Celebrating the anniversary of the city became part of imperial propaganda. Claudius was the first to hold magnificent celebrations in honor of the anniversary of the city, in AD 47, the eight hundredth year from the founding of the city. Hadrian, in AD 121, and Antoninus Pius, in AD 147 and AD 148, held similar celebrations respectively.
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In AD 248, Philip the Arab celebrated Rome's first millennium, together with Ludi saeculares for Rome's alleged tenth saeculum. Coins from his reign commemorate the celebrations. A coin by a contender for the imperial throne, Pacatianus, explicitly states "[y]ear one thousand and first", which is an indication that the citizens of the empire had a sense of the beginning of a new era, a "Sæculum Novum".
Calendar era.
The Anno Domini (AD) year numbering was developed by a monk named Dionysius Exiguus in Rome in , as a result of his work on calculating the date of Easter. Dionysius did not use the AUC convention, but instead based his calculations on the Diocletian era. This convention had been in use since AD 293, the year of the tetrarchy, as it became impractical to use regnal years of the current emperor. In his Easter table, the year was equated with the 248th regnal year of Diocletian. The table counted the years starting from the presumed birth of Christ, rather than the accession of the emperor Diocletian on 20 November AD 284 or, as stated by Dionysius: "sed magis elegimus ab incarnatione Domini nostri Jesu Christi annorum tempora praenotare" ("but rather we choose to name the times of the years from the incarnation of our Lord Jesus Christ"). Blackburn and Holford-Strevens review interpretations of Dionysius which place the Incarnation in 2 BC, 1 BC, or AD 1.
The year AD 1 corresponds to AUC 754, based on the epoch of Varro. Thus:
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Arapaoa Island
Arapaoa Island (formerly spelled Arapawa Island) is the second-largest island in the Marlborough Sounds, at the north-east tip of the South Island of New Zealand. The island has a land area of . Queen Charlotte Sound defines its western side, while to the south lies Tory Channel, which is on the sea route between Wellington in the North Island to Picton. Cook Strait's narrowest point is between Arapaoa Island's Perano Head and Cape Terawhiti in the North Island.
History.
According to Māori oral tradition, the island was where the great navigator Kupe killed the octopus Te Wheke-a-Muturangi.
It was from a hill on Arapaoa Island in 1770 that Captain James Cook first saw the sea passage from the Pacific Ocean to the Tasman Sea, and confirmed that what the indigenous people had told him was correct – Aotearoa is composed of two main islands. Cook is not known for naming places after himself, and it is speculated that Joseph Banks bestowed the name Cook Strait. This discovery banished the fond notion of geographers that there existed a great southern continent, Terra Australis. A monument at Cook's Lookout was erected in 1970.
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From the late 1820s until the mid-1960s, Arapaoa Island was a base for whaling in the Sounds. John Guard established a shore station at Te Awaiti in 1827, however initially could only salvage baleen until the station was equipped to process whale oil from 1830 onwards, targeting right whales. Later, the station at Perano Head on the east coast of the island was used to hunt humpback whales from 1911 to 1964 (see Whaling in New Zealand). The houses built by the Perano family are now operated as tourist accommodation. In the 2000s the former whalers from the Perano and Heberley families, who live on Arapawa, joined a Department of Conservation whale spotting programme to assess how the humpback whale population has recovered since the end of whaling.
An Air Albatross Cessna 402 commuter aircraft struck the 11,000-volt power lines linking the island and the mainland over Tory Channel in 1985. The crash was witnessed by many passengers on an inter-island Cook Strait ferry. The ferry immediately stopped to dispatch a rescue lifeboat. Along with the two pilots, one entire family died, and all but a young girl from the other. No bodies were ever found. The sole survivor (Cindy Mosey) was travelling with her family and the other family from Nelson to Wellington to attend a gymnastics competition. The Arapaoa Island crash caused public confidence in Air Albatross to falter, contributing to the company going into liquidation in December of that year.
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In August 2014, the spelling of the island's name was officially changed from "Arapawa" to "Arapaoa".
Conservation.
Parts of the island have been heavily cleared of native vegetation in the past through burning and logging, A number of pine forests were planted on the island. Wilding pines, an invasive species in some parts of New Zealand, are being poisoned on the island to allow the regenerating native vegetation to grow. About at Ruaomoko Point on the south-eastern portion of the island will be killed by drilling holes into the trees and injecting poison.
Arapaoa Island is known for the breeds of domestic animals found only on the island – the Arapawa pig, Arapawa sheep and Arapawa goat. They became established in the 19th century, but the origin of the breeds is uncertain, and a matter of some speculation. Common suggestions are that they are old English breeds introduced by the early whalers, or by Captain Cook or other early explorers. These breeds are now extinct in England, and the goats surviving in a sanctuary on the island are now also bred in other parts of New Zealand and in the northern hemisphere.
The small Brothers Islands, which lie off the northeast coast of Arapaoa Island, are a sanctuary for the rare Brothers Island tuatara.
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Administrative law
Administrative law is a division of law governing the activities of executive branch agencies of government. Administrative law includes executive branch rulemaking (executive branch rules are generally referred to as "regulations"), adjudication, and the enforcement of laws. Administrative law is considered a branch of public law.
Administrative law deals with the decision-making of administrative units of government that are part of the executive branch in such areas as international trade, manufacturing, the environment, taxation, broadcasting, immigration, and transport.
Administrative law expanded greatly during the 20th century, as legislative bodies worldwide created more government agencies to regulate the social, economic and political spheres of human interaction.
Civil law countries often have specialized administrative courts that review these decisions.
In the last fifty years, administrative law, in many countries of the civil law tradition, has opened itself to the influence of rules posed by supranational legal orders, in which judicial principles have strong importance: it has led, for one, to changes in some traditional concepts of the administrative law model, as has happened with the public procurements or with judicial control of administrative activity and, for another, has built a supranational or international public administration, as in the environmental sector or with reference to education, for which, within the United Nations' system, it has been possible to assist to a further increase of administrative structure devoted to coordinate the States' activity in that sector.
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In civil law countries.
Unlike most common law jurisdictions, most civil law jurisdictions have specialized courts or sections to deal with administrative cases that as a rule apply procedural rules that are specifically designed for such cases and distinct from those applied in private law proceedings, such as contract or tort claims.
Brazil.
In Brazil, administrative cases are typically heard either by the Federal Courts (in matters concerning the Federal Union) or by the Public Treasury divisions of State Courts (in matters concerning the States). In 1998 a constitutional reform led by the government of President Fernando Henrique Cardoso introduced regulatory agencies as a part of the executive branch. Since 1988, Brazilian administrative law has been strongly influenced by the judicial interpretations of the constitutional principles of public administration (Art. 37 of the Federal Constitution): legality, impersonality, publicity of administrative acts, morality and efficiency.
Chile.
In Chile, the President of the Republic exercises the administrative function, in collaboration with several ministries or other authorities with "ministerial rank". Each ministry has one or more under-secretaries that act through public service to meet public needs. There is no single specialized court to deal with actions against the administrative entities, but there are several specialized courts and procedures of review.
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