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TIL that until 1956 French children were served wine during school lunch breaks, and allowed up to half a litre a day!

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MeoRA TIL the human brain is estimated to compute at roughly 1 exaFLOP (10^18 operations) per second. The world's currently largest supercomputer operates at 0.2 exaFLOP/s and consumes 13 Megawatts. Our brain uses 20 watts.
mPwP TIL that today is the birthday of the New York subway. The subway system officially opened on Oct 27 1904 making 110 years old. It was the first rapid-transit subway system in America.
D1oZr TIL about the Spotlight Effect, due to which people constantly believe that they are being noticed much more than they really are. Since the centre of one's own world is oneself, and not others, you cannot correctly evaluate how others feel about you.
vQv8 TIL that unless you donate blood directly at a hospital, your blood is likely being resold for up to $200/pint back to the hospital by the local blood bank to the to recoup their costs of collection.
EbNx TIL that the largest infiltration of the U.S. Goverment involved breaches into 136 federal agencies, foreign embassies and consulates, as well as private organizations. The culprits: the Church of Scientology.