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TIL of Ada Blackjack, an indigenous woman sent on an expedition with 4 men to an Arctic island in 1921, within two years she was the sole survivor after facing -50 degree weather, being stalked and hunted by polar bears, and learning to hunt and trap despite no previous knowledge

R5jDw TIL The Thalweg principle is the legal principle that if the boundary between two political entities is stated to be a waterway without further description (e.g. right bank, eastern shore, low-tide line, etc.), the boundary follows the thalweg, the line of lowest elevation, of that watercourse.
vanj TIL Contrary to popular belief, Einstein never failed math. In fact, by fifteen he had already mastered differential and integral calculus.
rR9Ny TIL that even though daddy-long-leg spiders don't have powerful enough venom to harm humans, they hunt and kill larger spiders that can kill humans, like the redback spider. They use their long legs to quickly wrap other spiders with webbing, immobilizing them before biting and eating them.
MmoB TIL that North Carolina has a tax on the purchase of illegal substances. Users of illegal drugs are supposed to purchase a stamp and place it on the containers of their drugs as proof that they have payed the tax.
5Y7BB TIL scientists were able to spin a calcium carbonate molecule to 600 million RPM, generating 1 billion Gs of force. Unfortunately, the molecule spun so fast that it disappeared from the experimental chamber and scientist are still trying to find out where it went to this day.