si.edu

dDgdB TIL Oscar the Grouch was originally orange in the very 1st season of Sesame Street but was changed to green by the 2nd season because the orange made him look scary, with the show's lore saying he turned green after a moldy vacation to Swamp Mushy Muddy
BgeLd TIL that Galileo’s telescope discoveries supported heliocentrism—the idea that Earth orbits the Sun. In 1633, he was tried by the Inquisition for his findings and spent the rest of his life under house arrest.
kJjle TIL that there are estimated to be about 10 quintillion insects on the planet -- meaning there are over a billion bugs per person