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TIL: Due to the detonation of atomic bombs, everything on Earth was marked by a unique carbon signature. It can measure the date of anything from wine to human tissue.

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groB7 TIL the first German woman with a Chemistry Ph.D. was married to Fritz Haber — a chemist known for supporting nearly half of the world's population's food supply through the synthesis of ammonia from the air and also for being the "father of chemical warfare." The latter would lead to her suicide.
MylA TIL in the “Rumble in the Jungle” fight, Muhammad Ali allowed George Foreman to fruitlessly strike him in the arms and torso for 8 rounds without fighting back to tire him out, then punched Foreman ten times in a row to knock him out.
woLGM TIL about the silver fox domestication experiment which resulted in silver foxes having more dog like appearances
PdOn TIL the original Teenage Mutant Ninja Turtles movie (1990) was a low-budget non-studio flick that blew away box office records and became the highest-grossing indie film of all time (at the time).
Mlr0 TIL that when a dignitary complained to President Theodore Roosevelt about Alice Roosevelt (his daughter) smoking on top of the White House, Roosevelt replied, “I can be President of the United States, or I can control Alice. I cannot possibly do both.”