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TIL that lactase persistence, or the ability to digest milk properly, only developed in humans around 7,500 years ago.

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KYV4J TIL - Gophers were trialled to re-establish vegetation on Mt St. Helen's after it erupted. The results were positive but the experiment wasn't expanded.
dDDLd TIL that during the American Civil War, the Union regularly cracked the Confederacy's coded messages because the Confederacy relied on a limited number of key phrases for encrypting their messages, one of which was "Complete Victory".
7reLM TIL That the Pantheon is still standing after two millennia because the Romans used better quality concrete than we do
OGnZg TIL that according to the US Mint, 1 lb. of dimes, 1 lb. of quarters, and 1 lb. of half-dollars are worth exactly the same: $20. 1 kg of pennies = $4 and 1 kg of nickles = $10.
Me840 TIL Only 12 individuals, out of a total of 150,000 scientists and engineers who worked on the Manhattan project, were familiar with the overall project.