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TIL of David Sarnoff, the head of RCA and NBC who suppressed and then stole FM radio and Television from their inventors, driving one to suicide and the other to alcoholism.

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YpjnG TIL about the Battle of Manila Bay (1898) which was a decisive victory for the US Navy where they sunk all seven Spanish cruisers plus a transport ship and only lost one American life: Chief Engineer Francis B. Randall, who died of a heart attack.
bLB9 TIL Yellow speed limit signs in the U.S. are recommended speeds but are not enforced.
awZyM TIL that, to Escape Poachers, More Elephants are Being Born Tuskless
ODmR TIL Mithridates IV was paranoid of being poisoned so he took small doses throughout his life to build up an immunity. When he was finally captured by the Romans, he tried to kill himself with poison but couldn’t because he was immune.
x6oEb TIL the oldest company in the world is a Japanese construction company. It has been in continuous operation for 1,444 years