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TIL The USA is one of the only countries in the world that has no paid benefits for maternity leave.

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rRA11 TIL that sound forensics make it possible to reconstruct speech or other sound by watching leaves of a plant, earbud speakers or a potato-chip bag with a camera, even through soundproof windows.
J1yZj TIL spiders can produce “milk” for their offspring
5Y44B TIL of a "gravity train". If you could dig a tunnel through the center of the earth, a train could travel from one end to the other through force of gravity alone, coming to a gentle stop exactly at the other end.
N76lQ TIL that Robert Downey Jr. gave Chris Evans a custom-designed "Steve Rogers" car with the Cap shield emblazoned on the steering wheel
8aBm8 TIL of Centralia, Pennsylvania a coal mining town in which its coal mine has been on fire since 1962 and still burns to this day.