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Today I Learned that 3-toed sloths and 2-toed sloths aren't closely related to each other, and each group evolved the tree-hanging lifestyle independently, an example of convergent evolution.

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9RQG TIL The newest US Navy destroyer is so stealthy that they have to affix huge reflectors on it during peacetime operations because radar thinks the 610-foot warship is a 50-foot fishing vessel which has already caused one near-collision with a civillian vssel.
ZWdG TIL Cold War spy satellites from the 1960s took pictures of 10,000 ancient cities and ruins in the Middle East which nobody knew existed until they were re-examined in 2014. The images were made before modern cities overran many archaeological sites.
Lko40 TIL that the height limit on Washington, DC buildings has been in place since 1910 and has nothing to do with the height of the Washington Monument or the Capital Dome. Instead, height limits are based on the width of each street.
WkJ5L TIL when Kylie Jenner tried to trademark her name Kylie™ in 2016, Australian pop star Kylie Minogue successfully got the request blocked, with her lawyers telling the US government Kylie Minogue is “internationally renowned” while Kylie Jenner is a “secondary reality TV personality.”
XnOX TIL that juries can legally vote “Not Guilty” if they don’t agree with the morality of the law being applied to the defendant, but many judges refuse to let the jury know about this power as they believe morality is too complex for the average person to judge.