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TIL: The phrase "[murdered] in cold blood" doesn't refer to someone being cruel. It refers to the killer having had time to think over the crime and still do it in a calculated way. As opposed to doing it in the "heat of passion", their blood had time to cool before they committed the crime.

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07BR TIL a man was cured of HIV in Germany via a bone marrow transplant from a donor whose gene mutation made him immune to HIV. That gene is relatively common in N. Europe. Researchers have speculated that the gene is the result of natural selection during diseases similar to small pox or Black Death
e0vPg TIL If you walk around an aquarium in Japan, it is common for people to say ”Oishi Sou” which translates to “That looks delicious”.
aw44N TIL Great white sharks do not survive in captivity due to depression and refusing to be fed by humans, leading them to die of starvation. There are currently many theories on why this is. The current record for a Great White in captivity is only 44 days.
v1JWx TIL that companies such as Wholefoods, Starbucks, Microsoft, IBM make use of prison labour
GpnE TIL upon hearing that the Crusaders had lost Jerusalem in 1187, Pope Urban III suffered a heart attack and died