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TIL: The 'Seinfeld' theme song was different for every episode

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WkvG4 TIL 70% Ethanol (alcohol) is a more effective disinfectant because pure alcohol on a single celled organism triggers coagulation (clot) preventing it from penetrating deeper into the cell wall rendering it dormant but still alive. The water in 70% ethanol allows it to penetrate before it can clot.
kOxP1 TIL That the woman in the famous Alfred Hitchcock shower scene was Jamie Lee Curtis’ mother
Lll9 TIL That the first spacesuits for the Apollo missions were designed by the bra-maker Playtex, not a military contractor. Their designs were so much better than anyone else’s that they had to be taken seriously.
x6jab TIL: Badminton is the fastest racquet sport in the world. The shuttlecock speed can exceed 300kmph
dB67 TIL Scientists performed a successful head/brain transplant on a monkey, and when the monkey woke up, he tried to bite off the finger of an attending doctor, and everyone cheered.