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TIL Leonard Susskind was a plumber before going on to become one of the most noted astrophysicists of our time

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Lk6Gp TIL in 1926, Poland sent the US a birthday card with over 5 million signatures. Polish citizen Leopold Kotnowski visited the White House to present the card for America’s 150th birthday. It has 30,000 pages full of art, photos, poems and pressed flowers.
RoQj TIL that Sociopaths tend to be nervous, easily agitated, are prone to emotional outbursts, including fits of rage, and will appear to be very disturbed. Psychopaths are cool, calm, and meticulous; those around them may never suspect their true nature.
YLKd TIL The US Chamber of Commerce isn’t a Federal Agency, but a massive lobby group.
pYZ4 TIL that after examining deforested areas of the Amazon rainforest, archaeologists discovered that ancient Amazon Indians had carved massive, flawlessly designed geometric shapes into the ground. They are several hundred yards in diameter.
v1lJ4 TIL of gyotaku, the Japanese art of “fish-printing” where actual fish are prepped and painted with ink, then pressed on to paper. It originated as a way for fishermen to record their catches and is still practised today.