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TIL Stanford researchers in Costa Rica found adding a single tree to pasture land could boost biodiversity. For example, the number of bird species after one tree was planted went from near zero to 80.

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rNJGy TIL Railway Post Office cars sorted and delivered mail on moving trains, using hooks to catch mailbags without stopping. The last service ended in 1977, but remnants still exist along decommissioned tracks. At its peak, 9,000 trains covered 200,000 miles of mail routes.
YNW7 TIL Camden, New Jersey, with a population of 70,390, is per capita the poorest city in the nation
b9oma TIL of Bass Reeves, the first black U.S. Deputy Marshall west of the Mississippi, who is credited with capturing over 3,000 outlaws, including his own son. He is also rumored to be the inspiration for the Lone Ranger.
AbY7 TIL that scientist (Dr. Robert G. Heath) at Tulane University discovered the “pleasure centers” of the brain by zapping it with electricity in the 1950s, giving a woman a 30-minute orgasm.
BrZD TIL That a small town in Minnesota attempted to secede from the US in 1977 to declare war and lose, thus receiving foreign aid for their failing water system. It worked.