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TIL that a man in Africa single handedly stopped the desertification of his region by reviving ancient farming and irrigation techniques despite being ridiculed by his community.

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RAo8 TIL Alan Alda is the only actor to appear in all 251 episodes of the long-running series MAS*H. He commuted from Los Angeles to his home in New Jersey, where his wife and daughters lived, every weekend for the 11-year-run of the show, because he didn’t know how long the show would last.
mxjZM TIL that in 1962, the U.S. blew up a hydrogen bomb in space that was 100 times more powerful than Hiroshima. The aftereffects eventually caused six or more satellites to fail, as radiation damaged their solar arrays.
16K5D TIL about Thirdhand smoke. First-hand smoke refers to what is inhaled into the smoker's own lungs, while second-hand smoke is a mixture of exhaled smoke. Third-hand smoke is a reference to the smoking residue on surfaces after "second-hand smoke" has cleared out.
v5P8 TIL: According to the FBI, in 2012 black Americans committed 44% of all murders despite being only 12.61% of the US population. A white American is 223% more likely to be murdered by a black American than a black American is to be murdered by a white American.
4X0P6 TIL that our solar system's planet configuration is quite unusual and that it is more common for extrasolar planetary systems to have larger planets close to their suns, as opposed to our solar system which has small terrestial planets closer in, followed by the gas giants further away