What Happened On This Day – August 21
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        1993 NASA loses communication with the Mars Observer almost a year after its launchThe robotic space probe was tasked with exploring and studying the Red Planet. 
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        1991 Latvia gains full independence from the Soviet UnionFounded in 1918, the Republic of Latvia was fully incorporated as a Soviet republic after the Second World War. Independence for the Baltic state was achieved after a peaceful revolution known as the Singing Revolution, which began in Estonia. 
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        1986 Limnic eruption in Lake Nyos in Cameroon kills about 1700 peopleA high amount of carbon dioxide was released by the underwater volcanic eruption. 
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        1911 The Mona Lisa is stolenThe famed Leonardo da Vinci painting was stolen by a Louvre employee. It was recovered 2 years later in Italy. 
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        1879 Oldsmobile is founded by Ransom Eli Olds of Olds Motor WorksThe popular brand of car was first manufactured in Lansing, Michigan. The company was purchased by GM in 1908 and closed its doors in 2004. 
Births On This Day,
 August 21
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        1986 Usain BoltJamaican sprinter 
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        1984 Eve TorresAmerican wrestler, model, dancer 
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        1952 Joe StrummerEnglish singer-songwriter, guitarist, actor 
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        1936 Wilt ChamberlainAmerican basketball player 
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        1765 William IV of the United Kingdom
Deaths On This Day,
 August 21
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        1993 Tatiana TroyanosAmerican soprano 
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        1983 Benigno Aquino, Jr.Filipino politician 
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        1979 Giuseppe MeazzaItalian footballer 
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        1940 Leon TrotskyRussian theorist, politician, founded the Red Army 
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        1762 Lady Mary Wortley MontaguEnglish author