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TIL Einstein's great breakthroughs came from visual experiments performed in his head rather than the lab.

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xOyo TIL that Heinz Heydrich, brother of SS General Reinhard Heydrich (a main architect of the Holocaust), helped Jews escape the Holocaust after reading his brother’s SS and Gestapo files after Reinhard’s death.
A9bB TIL that the mega-detector, called IceCube, took 10 years to build 2,400 meters below the Antarctic ice. At one cubic km, it is bigger than the Empire State building, the Chicago Sears Tower - now known as Willis Tower - and Shanghai’s World Financial Center combined
kOE8g TIL some of the earliest carbon steel was made by the Haya people of East Africa ~2000 years ago in furnaces that reached 1800°C
xNk7 TIL that, when the mastermind behind the attack on Pearl Harbor, Hideki Tojo, was found with a self inflicted gunshot wound in his chest, he was pumped full of American blood, allowed to recover, and then later hanged for his war crimes.
4XZPR TIL an average silver back can deadlift 1800 lb and their grip can crush a crocodile's skull | They are 4 to 9 times stronger than an average human male.