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TIL sci fi author Jack Williamson coined the terms terraforming (1942), psionics (1952), and was one of the first people to use the term genetic engineering.

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MexkB TIL Jailed Nixon advisers John Ehrlichman and JR Haldeman were both Christian Scientists and they inserted language exempting "prayer is the only cure" parents from the Child Abuse Prevention and Treatment Act.
QJMa9 TIL Seattle was given nearly a billion dollars in the 60s to build a subway system but never did after the voters voted against it.
vP1B TIL the word “Nerd” was invented by Dr. Seuss
XE6XE TIL A fatal dose of caffeine is 113 cups of coffee, but you’d die of water poisoning first.
Eom0 TIL that in 1921 a group of whites burnt the wealthiest black community, in the United States, known as “black wall street”, to ground. Firebombs were dropped from airplanes and hundreds were killed. This massacre was not acknowledged in state history records until 1996.