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TIL: To avoid using the German sounding "hamburger" during WW2, Americans resorted to calling it a "liberty steak"

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OoaN7 TIL The liver is the only human internal organ capable of natural regeneration of lost tissue; as little as 25% of a liver can regenerate into a whole liver.
KML9 TIL: Like many deep-sea cephalopods, vampire squid lack ink sacs. If threatened, instead of ink, a sticky cloud of bioluminescent mucus containing innumerable orbs of blue light is ejected from the arm tips.
9YvwD TIL that prior to Steve Irwin's death - he designed and funded a study which discovered that crocodiles can "surf" long distances across the ocean. One of the crocodiles in this study surfed 366 miles within 25 days.
aw58M TIL the first Soviet citizen to visit the White House was a female WWII sniper with 309 confirmed kills, one of which was a sniper she dueled for 3 days.
b6P0p TIL there was orchestra in Auschwitz concentration camp