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TIL: The introduction of wolves into Yellowstone in 1995 had huge beneficial effects on the environment, including changing the flow of rivers and streams.

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D10Wj TIL that farmers have cows swallow a big magnet, so when cows eat things like loose nails, it doesn’t travel through their digestive tract and rip it open.
rRd5d TIL in 2015 three inmates from a maximum security prison beat Harvard’s debate team in a competitive debate.
WJKA TIL there is an extremely effective, reversible, cheap, simple, and long-term birth control procedure for men in phase III clinical trials in India
9wQoX TIL about the history of the Enigma machine, a cryptographic device used by the German military during World War II.
awrrN TIL that the man responsible for inventing leaded gasoline, Thomas Midgley Jr, was also accredited for the introduction of the ozone depleting refrigerant Freon. Later in life, Midgley contracted Polio and subsequently died when he was strangled by the very device he designed to get him out of bed.