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TIL Mark Twain invented and patented the bra-strap clasp.

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aw7Wb TIL Humans nearly went extinct, reducing to a population of only 8,800 which would qualify today as "endangered" before bouncing back
VMYBD TIL nearly 2,500 atomic weapons have been detonated on Earth - 520 of them atmospheric. In 1958 alone, the US detonated 75 weapons. 928 were detonated in Nevada as late as 1992.
PYM1J TIL humans live closer to the time of the T-Rex than the T.rex lived to the time of Stegosaurus
xVlk0 TIL you're more likely to OD from heroin on a relapse. People who use heroin long enough eventually build up a tolerance. What happens is people who get sober sometimes relapse but take a dose they were on at their worst. They unintentionally kill themselves by not realizing their tolerance dropped.
0yjv TIL that the serving sizes on food labels in the US are not the recommended healthy portion sizes but rather the amount customarily consumed by Americans as determined through sampling taken in the 1970s and 80s.