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TIL Leonardo Da Vinci invented a self-propelled cart (powered by two coiled springs and a balance wheel, like a watch) that could drive and even steer autonomously.

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gMKVD TIL that, after the 1940 election, unsuccessful challenger Wendell Willkie gave FDR his full support, making wartime foreign trips as FDR's envoy & even discussing the possibility of forming a liberal third-party together after the war (which, unfortunately, neither would live to see the end of).
R7dnQ TIL that a day on Venus lasts longer than a year on Venus (it takes 243 days for it to rotate on itself and 225 to complete its revolution)
bOKN TIL In 1990 NYC’s head D.A. oversaw the wrongful conviction of five 15 year-olds by using coerced confessions and intimidation tactics. In 2002, the real culprit confessed and to this day, the D.A. refuses to apologize to the men. She is now a multi millionaire author based on her legal expertise.
KO8ME TIL that "Reduce, Reuse, Recycle" only works in that order. First, reduce consumption. Then, reuse what you do consume. THEN, recycle what you can't reuse.
AEkx TIL that the brains of transgender people more closely match the brains of the gender they identify as than the one they don’t