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TIL when the islands of St Kilda were evacuated, the local subspecies of house mouse quickly went extinct as it depended so closely on human settlement

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ebDJ TIL China is leading world efforts in Molten Salt Reactor technology (safer nuclear power), hoping to commercially deploy them by 2030.
wLyg1 TIL there is government run service near me which will analyze drug samples anonymously sent to them and publish the results on their webpage
BrvBL TIL about 6 Tongan teenage boys who were shipwrecked and lived on the uninhabited island 'Ata for 18 months (1965-1966). The boys had set up a small commune, with a vegetable garden, hollowed-out tree trunks to collect water, a gym with odd weights, a badminton court, and a permanent fire.
JYOeB TIL Harvard offers free tuition if your family makes less than $65,000 annually.
LkWDd TIL in World War II, a few engineers wanted to reinforce the (returned) fighter planes where most of the bullet holes were. Mr. Abraham Wald then said: Let's reinforce them where no bullet holes are instead - because apparently, airplanes hit in these spots did NOT return.