Wozzeck, Alban Berg's first opera, is premiered at the Berlin State Opera conducted by Erich Kleiber. Date: December 14, 1925 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1925 📅 On This Day (Today)

Winter War: The Soviet Union is expelled from the League of Nations for invading Finland. Date: December 14, 1939 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1939 📅 On This Day (Today)

Plutonium (specifically Pu-238) is first isolated at Berkeley, California. Date: December 14, 1940 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1940 📅 On This Day (Today)

An Aeroflot Tupolev ANT-20 crashes near Tashkent, killing all 36 people on board. Date: December 14, 1942 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1942 📅 On This Day (Today)

Thomas T. Goldsmith Jr. and Estle Ray Mann are granted a patent for their cathode-ray tube amusement device, the earliest known interactive electronic game. Date: December 14, 1948 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1948 📅 On This Day (Today)

Albania, Austria, Bulgaria, Cambodia, Ceylon, Finland, Hungary, Ireland, Italy, Jordan, Laos, Libya, Nepal, Portugal, Romania and Spain join the United Nations through United Nations Security Council Resolution 109. Date: December 14, 1955 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1955 📅 On This Day (Today)

NASA's Mariner 2 becomes the first spacecraft to fly by Venus. Date: December 14, 1962 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1962 📅 On This Day (Today)

The dam containing the Baldwin Hills Reservoir bursts, killing five people and damaging hundreds of homes in Los Angeles, California. Date: December 14, 1963 Read more on Wikipedia → 📅 Other events on December 14 📅 Events on this day in 1963 📅 On This Day (Today)