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TIL among the disintegrated remains of the Space Shuttle Columbia was the diary of Ilan Ramon, which managed to survive mostly intact. The diary detailed his first six days during Columbia's final mission.

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ZWnR TIL that North American Beavers cannot breed with European Beavers, and that the result of more than 27 attempts was a single stillborn kit.
loQn1 TIL about the key distinction between “proximate” and “ultimate” analyses in biology & psychology
lO67 TIL: 73939133 is the largest known prime number that, if you keep removing digits from the right, will always leave a prime number.
84wZ TIL living near coal-fired power stations exposes people to higher radiation doses than living near nuclear plants
R5PPw TIL 20 billion pounds of produce are thrown out in the US every year