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TIL of Viktor Pestek, a 19-year-old S.S. guard at Auschwitz who was so disgusted by the camp that he began to help Jews escape. He was discovered and executed by his fellow guards. To this day he has never been formally recognized for his actions.

16egP TIL Beavers can chew underwater without getting water in their lungs, thanks to a special flap at the back of their mouths. They have clear membranes over their eyes that help them to see underwater, like goggles. They can also hold their breath for up to 20 minutes.
oRlkr TIL: That whilst shooting the music video for Sledgehammer, Peter Gabriel lay under a sheet of glass for 16 hours while filming the video one frame at a time. "It took a lot of hard work", Gabriel recalled, "I was thinking at the time, if anyone wants to try and copy this video, good luck to them."
XdaD TIL of Niihau, the 7th largest island of Hawaii which is completely privately owned by one family who seeks to maintain it as it was purchased in 1864 for $10,000 in gold, including the native population.
PVlV TIL Gene Wilder is still alive, and hasn’t acted in a movie, because he is tired of “the bombing, shooting, killing, swearing and 3-D.”
6Ej1X TIL that humans can regenerate some of their organs through a process called compensatory hypertrophy. When part of the liver is removed or destroyed, the remaining portion grows to the original size and allows the liver to function as it did before. Kidneys and lungs can also similarly compensate.