Canadian PM Mackenzie King,
US President Franklin Roosevelt
and British PM Winston Churchill

The Quebec Agreement between the United Kingdom and the United States outlined terms for coordinated scientific development of nuclear energy. It stipulated that the US and UK would pool their resources to develop nuclear weapons, and that neither would use the weapons against another country without mutual consent, or pass information about them to other countries. The agreement merged the British Tube Alloys project with the American Manhattan Project, and created the Combined Policy Committee to control the joint project. It was signed by Winston Churchill and Franklin D. Roosevelt on 19 August 1943 during World War II, at the Quadrant Conference in Quebec City in Canada. Although Canada was not a signatory, the agreement provided for a Canadian representative on the Combined Policy Committee in view of the country's contribution. On 7 January 1948, the Quebec Agreement was superseded by a provisional agreement allowing for limited sharing of technical information. ( Full article...)

Part of the History of the Manhattan Project series, one of Wikipedia's featured topics.

Jane Britton

• ... that the red ochre sprinkled on the body of Jane Britton (pictured) 50 years ago today ultimately turned out to be a red herring in solving her murder?
• ... that with the launch of PSLV-C42 the Indian Space Research Organisation has launched a total of 239 foreign satellites for 28 different countries?
• ... that in 1933 Green Bay Packers president Lee Joannes personally loaned the organization $6,000 to keep it in operation?
• ... that in 1960 Emil Paleček discovered that nucleic acids could be studied electrochemically, contradicting previous assumptions that DNA molecules were too large to have electrochemical properties?
• ... that regolith-hosted rare earth element deposits are mostly low grade, but economic to mine?
• ... that actor Tom Hanks has claimed that the Hermes 3000 would be the luxury item he would take to a desert island?

Bartholomew I of Constantinople

• Bartholomew I (pictured), the Ecumenical Patriarch of Constantinople, grants independence to the Orthodox Church of Ukraine in the ongoing schism within Eastern Orthodox Christianity.
• The China National Space Administration's Chang'e 4 becomes the first spacecraft to land on the far side of the Moon.
• A train accident on the Great Belt Fixed Link in Denmark kills eight passengers.
• In darts, Michael van Gerwen defeats Michael Smith to win the PDC World Championship.

January 7: Christmas ( Julian calendar); Victory over Genocide Day in Cambodia

Flag of the Cispadane Republic

• 1782 – The Bank of North America opened in Philadelphia, Pennsylvania, as the United States' first de facto central bank.
• 1797 – The first official Italian tricolour (pictured) was adopted by the government of the Cispadane Republic.
• 1939 – The French physicist Marguerite Perey identified francium, the last element first discovered in nature, rather than by synthesis.
• 1979 – The People's Army of Vietnam captured Phnom Penh, which marked the end of large-scale fighting in the Cambodian–Vietnamese War.
• 1989 – Representatives of Ruhollah Khomeini delivered a letter to Mikhail Gorbachev, inviting him to consider Islam as an alternative to communism, and predicting the dissolution of the Soviet Bloc.

Eliezer Ben-Yehuda (b. 1858) · Zara Cisco Brough (d. 1988) · Run Run Shaw (d. 2014)