Pu-238 First Isolated in Berkeley, California, December 14, 1940

World War II: Witold Pilecki is voluntarily captured and sent to Auschwitz concentration camp to gather and smuggle out information for the resistance movement. Date: September 19, 1940 Read more on Wikipedia → 📅 Other events on September 19 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Vidkun…

World War II: The Siege of Calais ends with the surrender of the British and French garrison. Date: May 26, 1940 Read more on Wikipedia → 📅 Other events on May 26 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940Lascaux Cave Paintings Discovered in France, September 12,…

World War II: Germany's conquest of France begins, as the German army crosses the Meuse. Winston Churchill makes his "blood, toil, tears, and sweat" speech to the House of Commons. Date: May 13, 1940 Read more on Wikipedia → 📅 Other events on May 13 📅 Events on this day in 1940 📅 On This…

World War II: The Norway Debate in the British House of Commons begins, and leads to the replacement of Prime Minister Neville Chamberlain with Winston Churchill three days later. Date: May 7, 1940 Read more on Wikipedia → 📅 Other events on May 7 📅 Events on this day in 1940 📅 On This Day…

Vidkun Quisling seizes power in Norway. Date: April 9, 1940 Read more on Wikipedia → 📅 Other events on April 9 📅 Events on this day in 1940 📅 On This Day (Today) More events from 1940A Wild Hare Introduces Bugs Bunny July 27, 1940Second Vienna Award Transfers Northern Transylvania from Romania to Hungary, August…