2012 – Tammy Baldwin becomes the first openly gay politician to be elected to the United States Senate.

1971 – The United States Atomic Energy Commission tests the largest U.S. underground hydrogen bomb, code-named Cannikin, on Amchitka Island in the Aleutians.

2024 – Donald Trump becomes the first president of the United States to be elected to a non-consecutive second term in 132 years, since Grover Cleveland won the 1892 election.

2007 – The Android mobile operating system is unveiled by Google.

 Djangoe wrote:

 Red_Dragon wrote:

Yer still clinging to some kind of race-theory ...or?! What of racism.
(Asking for a friend of Barack Hussein Obama II)

2008 – Barack Obama becomes the first person of biracial or African-American descent to be elected as President of the United States.

1980 – Ronald Reagan is elected as the 40th President of the United States, defeating incumbent Jimmy Carter.

1960 – At the Kasakela Chimpanzee Community in Tanzania, Jane Goodall observes chimpanzees creating tools, the first-ever observation in non-human animals.

1922 – In Egypt, British archaeologist Howard Carter and his men find the entrance to Tutankhamun's tomb in the Valley of the Kings.

2016 – The Chicago Cubs defeat the Cleveland Indians in the World Series, ending the longest Major League Baseball championship drought at 108 years.

1936 – The BBC Television Service, the world's first regular, "high-definition" (then defined as at least 200 lines) service begins. Renamed BBC1 in 1964, the channel still runs to this day.

1920 – In the United States, KDKA of Pittsburgh starts broadcasting as the first commercial radio station. The first broadcast is the result of the 1920 United States presidential election.

1917 – The Balfour Declaration proclaims British support for the "establishment in Palestine of a national home for the Jewish people" with the clear understanding "that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities".

1993 – The Maastricht Treaty takes effect, formally establishing the European Union.

1963 – The Arecibo Observatory in Arecibo, Puerto Rico, with the largest radio telescope ever constructed, officially opens.

1952 – Nuclear weapons testing: The United States successfully detonates Ivy Mike, the first thermonuclear device, at the Eniwetok atoll. The explosion had a yield of ten megatons TNT equivalent.

1951 – Operation Buster–Jangle: Six thousand five hundred United States Army soldiers are exposed to 'Desert Rock' atomic explosions for training purposes in Nevada. Participation is not voluntary.

1941 – American photographer Ansel Adams takes a picture of a moonrise over the town of Hernandez, New Mexico that would become one of the most famous images in the history of photography.