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TIL Hippos have red sweat that is frequently mistaken for blood

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PYE0V TIL a Harvard professor suggested implanting launch codes inside a human volunteer close to their heart so the president would have to kill an innocent person in order to fire nuclear weapons.
o8eL TIL the FAA considered building a fake Havana airport in south Florida in the 1960s to address a spree of skyjackings. Many plane hijackers at the time wanted to fly to Cuba. They would have landed at the phony airport, thinking they were in Havana, then been surprised and arrested by U.S. agents.
Oo4k1 TIL that of the 20 most watched television broadcasts, 19 are Super Bowls. The lone TV series episode, at #9, is the series finale of MAS*H in 1983.
ad0L TIL there are cone snails that use insulin to hunt. They release a highly concentrated cloud of insulin that severely reduces the blood sugar in prey, making them too weak to escape.
yQroa TIL fungi are 2.5 billion years old and are technically our ancestors