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TIL lizards in areas hit by hurricanes have evolved grippier, bigger toe pads in order to hang on against high winds, even within one generation. Researchers studied 188 anole lizard species in 70 years of hurricane data. In areas spared by hurricanes, lizard toe pads were smaller.

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yola TIL the radioactive isotope Polonium-210 is found in tobacco smoke.
W7L8B TIL that, in 1805, Carl Friedrich Gauss had actually invented Fast Fourier Transform even before Fourier Transform itself but it was forgotten because he didn't publish it. It was re-invented about 160 years later by James Cooley & John Tukey, in a bid to detect nuclear bomb testing underground.
5YEp9 TIL UNESCO’s World Heritage Convention was created to preserve the Temple of Abu Simbel in Egypt. After the Nasser Dam was built, the temple was briefly submerged underwater and a large effort was undertaken to relocate the mountain it was carved on and rebuild the temple piece by piece.
JYoG1 TIL parrots' utterances can be used in criminal court proceedings.
NO41 TIL that all US astronauts are required to learn Russian as part of their extensive training, and have to be able to run the ISS using Russian-language training manuals if necessary.