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TIL we use the word cancer as a medical diagnosis because Hippocrates thought the tumors looked like crabs

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via reddit.com

d8ZZ9 TIL at least once a day, your immune system destroys a cell that could have become a cancer cell if it lived
5mxP TIL: One night, Richard Nixon left the White House to visit the Lincoln Memorial. While there, he engaged in a political debate with students in DC protesting the Vietnam War.
0Qnj TIL: Today I learned about ghost flowers, a flowering plant with no chlorophyll.
yQB98 TIL the 369th Infantry Regiment (better known as the Harlem Hellfighters) served on the front lines for 191 days during World War I, longer than any other American unit. In that time they never gave up any ground they captured.
16ApO TIL There’s enough gold inside Earth to coat the entire planet in 1.5 feet (45.7 cm) of gold. 99% of the precious metal can be found in the Earth's core.