| January |
| 6th |
The United Kingdom recognises the People's Republic of China. The Republic of China severs diplomatic relations with Britain in response |
| 9th |
The Israeli government recognises the People's Republic of China |
| 12th |
British submarine Truculent collides with a Swedish oil tanker in the Thames Estuary and sinks leaving 64 dead |
| 15th |
Volcanic cloud kills 5000 in Mount Lamington, New Guinea |
| 17th |
The Great Brinks Robbery - 11 thieves steal more than $2 million from an armored car in Boston, Massachusetts |
| 23rd |
The Knesset passes a resolution that states Jerusalem is the capital of Israel |
| 24th |
Klaus Fuchs, a German émigré and physicist, walked into London's War Office and confessed to being a Soviet spy: for 7 years, he passed top secret data on U.S. and British nuclear weapons research to the Soviet Union |
| 29th |
Lord Balfour criticizes the fact that rationing is still in force in Britain |
| 31st |
President Harry S. Truman orders the development of the hydrogen bomb in response to the detonation of the Soviet Union's first atomic bomb in 1949. |
| February |
| 1st |
Chiang Kai-shek re-elected as a president of the Republic of China |
| 9th |
In his speech to the Republican Women's Club at the McClure Hote in Wheeling, West Virginia, Senator Joseph McCarthy accuses the United States Department of State of being filled with 205 Communists |
| 11th |
Two Viet Minh battalions attack a French base in French Indochina |
| 12th |
Pro-communist riots in Paris |
| 12th |
Albert Einstein warns that nuclear war could lead to mutual destruction |
| 13th |
The US Air Force loses a Convair B-36 bomber that carried an Mk-4 atomic bomb off the west coast of Canada, and produced the world's first Broken Arrow |
| 14th |
The Soviet Union and the People's Republic of China sign a mutual defense treaty |
| 19th |
Konrad Adenauer tries unsuccessfully to negotiate with East Germany to begin unification |
| 24th |
British Labour Prime Minister Clement Attlee, defeats conservative challenger, Winston Churchill to win the General Election and form a new government |
| March |
| 1st |
Klaus Fuchs is convicted in London of spying against both Britain and the United States for the Soviet Union by giving to the latter top secret atomic bomb data |
| 3rd |
Poland states that it intends to exile all Germans |
| 8th |
The Soviet Union claims to have an atomic bomb |
| 8th |
The first Volkswagen Type 2 van (also known as the Volkswagen Microbus) rolls off the assembly line in Wolfsburg, Germany |
| 12th |
A plane carrying returning rugby fans from Ireland to Wales crashes near Llandow with the loss of 80 lives |
| 20th |
Government of Poland decides to confiscate the property of the Polish church |
| 22nd |
Egypt demands that Britain remove all its troops in Suez Canal |
| 23rd |
The 22nd Academy Awards ceremony take place in Los Angeles, California |
| April |
| 15th |
Belgian King Leopold III announces that he is ready to abdicate in favour of his son Baudouin |
| 24th |
Jordan formally annexes the West Bank |
| 27th |
In South Africa, the Group Areas Act is passed, formally segregating races |
| 27th |
Britain formally recognises Israel |
| May |
| 6th |
The "Cazin uprising" in town of Cazin (Bosnia) protests against Communist agrarian reforms |
| 6th |
Tollund Man is found |
| 9th |
L. Ron Hubbard publishes Dianetics: The Modern Science of Mental Health |
| 10th |
Arsenal won the FA Cup |
| 13th |
The first race in the inaugural FIA Formula One World Championship was held at Silverstone, England |
| 25th |
The Brooklyn-Battery Tunnel is formally opened to traffic |
| June |
| 3rd |
First ascent of Annapurna I, 10th highest mountain in the world |
| 24th |
The football World Cup Finals begin in Brazil |
| 25th |
Americans begin hoarding supplies in case of rationing and shortages as the Korean War begins |
| 28th |
North Korean forces capture Seoul |
| July |
| 16th |
Uruguary win the football World Cup, beating hosts Brazil 2 - 1 in the deciding match of the four-team final group (this was the only tournament not decided by a one-match final) |
| August |
| 5th |
Florence Chadwick swims across English Channel in 13 hours, 22 minutes |
| 5th |
A bomb-laden B-29 Superfortress crashes into a residential area in California: 17 dead, 68 injured |
| 8th |
Winston Churchill supports idea of pan-European army allied with Canada and USA |
| 12th |
In his Encyclical 'Humani Generis', Pope Pius XII declares evolution to be a serious hypothesis that did not contradict essential Catholic teachings |
| 15th |
Earthquake and floods happen in Assam, India: 574 deaths, 5,000,000 believed homeless |
| 23rd |
Legendary singer-actor Paul Robeson, whose passport has recently been revoked because of his alleged Communist affiliations, meets with U.S. officials in an effort to get it reinstated. He is unsuccessful, and it is not reinstated until 1958 |
| September |
| 7th |
Coal mine collapses in New Cumnock, Scotland leaving 13 miners dead |
| 12th |
Communist riots take place in Berlin |
| 15th |
Allied troops land in Inchon, occupied by North Korea, to begin the Battle of Inchon |
| 26th |
Indonesia admitted to the United Nations |
| 28th |
Ray Bradbury publishes his famous short story "The Veldt" |
| October |
| 2nd |
The comic strip Peanuts by Charles M. Schulz is first published in seven US newspapers |
| 3rd |
Getúlio Dornelles Vargas, elected president of Brazil, for a five-year term |
| 7th |
The 1950-1951 invasion of Tibet by China begins |
| 11th |
The Federal Communications Commission issues the first license to broadcast television in color, to CBS (RCA will successfully dispute and block the license from taking effect, however) |
| 15th |
The second Tacoma Narrows Bridge opens |
| 15th |
In East Germany, communists win 99.7% of the vote |
| 26th |
Sister Mary Teresa begins her charity work in Calcutta and becomes known as Mother Teresa |
| November |
| 1st |
Puerto Rican nationalists Griselio Torresola and Oscar Collazo attempt to assassinate US President Harry S. Truman, who is staying at the Blair-Lee House in Washington, D.C. during White House repairs |
| 4th |
United Nations ends the diplomatic isolation of Spain |
| 8th |
While in an F-80, United States Air Force Lt. Russell J. Brown intercepts two North Korean MiG-15s near the Yalu River and shoots them down in the first jet-to-jet dogfight in history |
| 10th |
A US Air Force B-50 Superfortress bomber, experiencing an in-flight emergency, jettisoned and detonated a Mark 4 nuclear bomb over Quebec, Canada. The device lacked its plutonium core |
| 13th |
Colonel Carlos Delgado Chalbaud is kidnapped and murdered in Caracas |
| 13th |
A Curtiss Reid Flying Services plane crashes while enroute to Paris from Rome killing all 52 on board |
| 18th |
The United Nations accepts the formation of Libyan national council |
| 20th |
T. S. Eliot speaks against television in the UK |
| 22nd |
Shirley Temple announces her retirement from show business |
| 25th |
Phenomenal winter storms ravage the Northeastern United States, bringing 30 to 50 inches of snow, temperatures below zero, and kills 323 people |
| 26th |
Troops from the People's Republic of China move into North Korea and launch a massive counterattack against South Korean and American forces at Chosin, ending any thought of a quick end to the conflict |
| 28th |
Greece and Yugoslavia reform diplomatic relations |
| 29th |
North Korean and Chinese troops force a retreat of United Nations forces from North Korea |
| 30th |
Douglas MacArthur threatens to use nuclear weapons in Korea |
| December |
| 3rd |
Mount Etna erupts in Sicily |
| 11th |
The Maria Hertogh riots start in Singapore, leaving 18 dead and 173 injured |
| 12th |
Paula Ackerman becomes the first woman in the United States to serve a congregation as a Rabbi |
| 24th |
Scottish nationalists take the Stone of Scone from Westminster Abbey |
| 28th |
The Peak District becomes Britain's first National Park |