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120

TIL: You burn 650 calories donating one pint of blood.

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ADbYd TIL that the average adult will spend 36% of his or her life asleep.
W79g9 TIL Mark-Paul Gosselaar (Zack Morris on Saved By The Bell) dated his three female co-stars: Lark Voorhies, Tiffani Thiessen, and Elizabeth Berkley while filming the show. Not even Zack pulled that off.
m1Wkx TIL Captain Planet was originally going to be voiced by Tom Cruise. He even recorded a few episodes, but they never made it to air.
Ra79 TIL that the Ku Klux Klan successfully adopted a road in Missouri. The Missouri state legislature fought back by renaming the road after civil rights icon Rosa Parks.
9wNED TIL that President Ulysses S. Grant was nearly bankrupted by a Ponzi scheme a year before his death, and was saved from near-destitution by partnering with Mark Twain on his memoirs