August 6th

Curiosity, a SUV-size rover, successfully landed on Mars. The rover's research has been planned for the next two years, but since Curiosity's electricity is powered by plutonium, it could be operational and provide insight into Mars for decades to come.
Lunar Roving Vehicle
Violence erupted in London amid anger over the fatal police shooting of a 29-year-old father of four. rioting and looting spread to other parts of the city and other English cities over the next several days, leaving five dead.
2011 England riots
Sonia Sotomayor was confirmed as the first Hispanic Supreme Court justice by a Senate vote of 68-31.
Sonia Sotomayor Supreme Court nomination
Coup in Mauritania. In the 6th coup in the North African country since 1978, President Sidi Ould Cheikh Abdallahi was overthrown and General Mohamed Ould Abdel Aziz, a career military officer, was installed in his place.
2008 Mauritanian coup d'état
The Crandall Canyon Mine in central Utah collapsed, trapping six coal miners. (All six miners died, along with three rescuers.).
Huntington, Utah
Arnold Schwarzenegger announced his candidacy to replace Gray Davis as governor of California to Jay Leno on the Tonight Show.
California gubernatorial recall election
British prime minister Tony Blair and Sinn Fein president Gerry Adams meet—the first time in 76 years that a British leader and an IRA ally meet.
Martin McGuinness
NASA announces that life may have existed on Mars after examining meteorite ALH84001, thought to be from Mars.
Life on Mars
Tim Berners-Lee releases files describing his idea for the World Wide Web. WWW debuts as a publicly available service on the Internet.
History of the World Wide Web
Pope Paul VI died at age 80.
Pope Paul VI
President Johnson signed the Voting Rights Act of 1965, which outlawed the poll taxes and literacy tests that had restricted black voter registration in the South.
Voting Rights Act of 1965
Jamaican Independence. The Caribbean island country was first colonized by the Spanish in the early 16th century. In 1655, the British invaded Spanish Jamaica and made it a colony after the Spanish surrendered. Jamaica soon became one of the most profitable colonies of the British Empire, especially after sugarcane was brought to the island by the English. The Jamaica Independence Act of July 1962, which was a result of anti-colonial sentiments that were spreading throughout the globe, gave Jamaica full independence by leaving the Federation of the West Indies.
Independence of Jamaica
Voting Rights Act Becomes Law in the United States. President Lyndon B. Johnson signed the act, which prohibited any discrimination in voting. The act enforces the 14th and 15th amendments to the US Constitution.
Voting Rights Act of 1965
US Bombs Hiroshima. In the first of the only two times nuclear weapons have been used in warfare, the United States dropped a nuclear bomb, nicknamed Little Boy on the industrial city of Hiroshima in Japan. Over 150,000 people were estimated killed by the resulting explosion. Japan had joined the Second World War in December 1941 on the side of the Axis powers. After the Hiroshima and Nagasaki bombings 3 days later on August 9, Japan surrendered to the Allies and ended the Pacific War.
Atomic bombings of Hiroshima and Nagasaki
First Woman to Swim Across the English Channel. Gertrude Ederle, an American Olympic swimmer swam across the English channel a body of water between England and France, in 14 hours and 34 minutes. Only 5 other people, all men, had swum across the channel before Ederle.
List of successful English Channel swimmers
Austria-Hungary declared war against Russia, and Serbia declared war against Germany at the outbreak of World War I.
July Crisis
The electric chair was used for the first time, to execute a convicted murderer at Auburn State Prison in New York.
William Kemmler
Upper Peru became the autonomous republic of Bolivia.
Bolivian War of Independence
The Holy Roman Empire ended with the abdication of Emperor Francis II.
Francis II, Holy Roman Emperor
The Treaty of The Hague is signed whereby the Dutch Republic sells New Holland (Brazil) for 63 tonnes of gold to Portugal.
Treaty of The Hague (1661)