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TIL in WWII, the Japanese ambassador to Nazi Germany became one of the Western Allies greatest and highest-level sources in Berlin, offering up information on the invasion of the Soviet Union, German defenses at the Atlantic Wall, and more...without ever knowing his cables had been decrypted

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W79WX TIL Smoke Inhalation causes most house fire deaths
epavE TIL that Richard Sorge was a Soviet spy in Japan during WWII. He had an open affair with the German ambassador’s wife, and told Stalin that Japan would NOT invade Russia, allowing the Soviets to move troops just in time to save Moscow in 1941.
vVkR TIL the heaviest thing you can get shipped free from Amazon is a 1,500-pound safe.
LkG1d TIL that researchers figured out a way to break into locks by using a smart phone to record the sound of a key being inserted. They were able to narrow down the range from more than 330,000 keys to 3.
0lVv TIL that 91 of the 220 cast and crew of the movie The Conqueror, including John Wayne and Susan Hayward, died of cancer suspected to be caused by radioactivity in St. George, Utah, downwind of 1950s atomic bomb tests at the Nevada Test Site. The director shipped 60 tons of dirt back to Hollywood,too