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TIL 70% isopropyl alcohol is a more effective disinfectant than 99% concentrated

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via reddit.com

oRlY8 TIL that Devin Gaines earned five bachelor's degrees with honors simultaneously at the University of Connecticut, averaging 24 credits per semester and three hours of sleep per night. Tragically, he drowned in 2007 due to a lack of swimming skills.
gMa8W TIL in 2017 raccoons and chimps were put through the Aesop's Fable test, to see if they could learn to displace water to get food from a container. Many succeeded: the raccoons used their hands to manipulate the container in creative ways, and one chimp simply peed into the container (which worked).
rdxe TIL in August 2001 actor James Woods reported 4 suspicious individuals on his flight. Authorities did not act on his claim and they later turned out to be the 9/11 hijackers.
awWM9 TIL of the "Happy ending problem", named that way because it led to the mathematician who proposed it, Esther Klein, and the one who solved it, Georges Szekeres, marrying each other.
MejgW TIL about the Jabuticaba tree which grows warts like fruits directly on its trunk.