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TIL about Dr. Samuel Mudd Sr., an American physician who rendered aid to John Wilkes Booth after President Lincoln's assassination and then covered up Booth's location when questioned by authorities. Mudd was convicted of conspiring to assassinate the president but avoided execution by one vote.

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v1k7 TIL in 1692, an impoverished widow and mother of 8 named Susannah Martin fell victim to the Salem Witch Trials and was hanged. Her great-great-great-great Grandson would become the 21st President of the US, Chester A. Arthur.
nDkY TIL Jaguar uses bull leather instead of cow leather because it shows no stretch marks from pregnancy.
PYk8w TIL The Amnesiac Incognito Live System (TAILS) is a Debian-based distribution focused on security and anonymity. It uses things like the system RAM and TOR browser to increase privacy. It will only write to removeable media and upon shutdown, RAM is wiped.
8a9rX TIL that there is an exclusive Antarctic group of scientists called the Club 300. To be a member, they would soak in a 200°F sauna, then run outside naked in -100°F temperatures. The goal is to experience a 300 degree temperature swing, and see how long they can run around the Ceremonial South Pole.
41ww TIL Myopia is extremely uncommon among nonhuman primates but researchers can easily induce it by depriving infant monkeys of normal outdoor lighting levels. Outdoor lighting is usually about 100 times more intense than what you get inside