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TIL that octopuses have three hearts and blue blood
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sciencefocus.com
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D1jpD
TIL Coffee doesn't actually dehydrate you. A 2003 study found that the diuretic effect of caffeine is negligible in people who regularly consume caffeinated drinks
8boK
TIL bob ross made an episode where he painted all in grey for a colorblind viewer
E1Bvp
TIL that Abigail Adams, who believed slavery was evil and antithetical to democracy, wrote on the eve of the Revolutionary War, that she doubted her fellow Americans had the "passion for liberty" they claimed to have, given how they "deprived their fellow creatures" of freedom.
5Yllp
TIL that Lee Richmond, the first Major League pitcher to throw a perfect game (in 1880) once had a physics professor explain to him that a curveball couldn't exist, and it was only an optical illusion. In response to this, Richmond invited the entire faculty to watch him pitch.
mPwP
TIL that today is the birthday of the New York subway. The subway system officially opened on Oct 27 1904 making 110 years old. It was the first rapid-transit subway system in America.