Source: HistoryNet.com
0480: Themistocles and his Greek fleet win one of history's first decisive naval victories over Xerxes' Persian force off Salamis.
1519: Ferdinand Magellan embarks from Spain on a voyage to circumnavigate the world.
1561: Queen Elizabeth of England signs a treaty at Hampton Court with French Huguenot leader Louis de Bourbon, the Prince of Conde. The English will occupy Le Havre in return for aiding Bourbon against the Catholics of France.
1952: Scientists confirm that DNA holds hereditary data.
1971: Hurricane Irene becomes the first hurricane known to cross from the Atlantic to Pacific, where it is renamed Hurricane Olivia.
1973: In a pro tennis bout dubbed "The Battle of the Sexes,” Billie Jean King beats Bobby Riggs at the Houston Astrodome in Texas.
1977: Socialist Republic of Vietnam admitted to the United Nations.
2000: British MI6 Secret intelligence Service building in London attacked by unidentified group using RPG-22 anti-tank missile.
2001: US Pres. George W. Bush, addressing a joint session of Congress, declares a "war on terror.”
2008: A truck loaded with explosives detonates by Marriott hotel in Islamabad, Pakistan, killing 45 and injuring 226.