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TIL Around 50% of the protein you consume comes from the Haber-Bosch process. Without this process, we would've never been able to maintain our current population's food intake.

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OoZv1 TIL that the first proposal for space travel in English history was made by Oliver Cromwell’s brother-in-law in the 17th century, who thought that we just needed to fly 20 miles above the Earth to be released from its magnetism and sail to other planets to trade with the inhabitants.
awM0N TIL Astronauts often see random flashes of light in space, even through closed eyes - this is caused by cosmic rays passing through their eyes or optical nerves. Scientists think the light is either generated by Cherenkov radiation or by the ray being powerful enough to activate the optical nerve.
nLYW TIL the killer whales of Eden were a group of Orcas known for their co-operation with human hunters of other whale species. The killer whales would find target whales, shepherd them into Twofold Bay, and then alert the whalers to their presence and often help to kill the whales.
D1rjr TIL about The Tragically Hip, "the most Canadian band in the world". They have sold more albums in Canada than global bands like U2, and have had nine albums in the #1 spot on Canadian charts, but are virtually unknown outside of Canada.
Y7yR7 TIL that for 30 years, South Korea had 110-120 boys born for every 100 girls, resulting in 700,000 to 800,000 “extra” South Korean men who now are having difficulty finding women to marry