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TIL Before we started using extracts from horseshoe crab blood to test pharmaceuticals for infectious agents, the test meds were instead injected into rabbits; contamination would be proven by the rabbit getting a fever.

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gMoJb TIL the first hostile aerial bombardment on U.S. soil happened in 1921 in Tulsa, Oklahoma, when white police forces took to the air to drop incendiary bombs and dynamite on the business district in the black neighborhood of Greenwood, known at the time as the "Black Wall Street."
7M1b TIL in 1998 a 16 year old British boy obsessed with smelling nice died from using too much deodorant.
5YMBD TIL the Italian container ship “Grande America”, carrying 2,000+ cars, sank after a fire broke out along with 4 Porsche 911 GT2 RS's, their fastest production model limited to 1,000 units. All 27 crew members were able to evacuate and Porsche restarted production to make 4 more to fill the orders
KYvW6 TIL that several crew members onboard the Challenger space shuttle survived the initial breakup. It is theorized that some were conscious until they hit the surface of the Atlantic Ocean.
rP4 TIL British bombers bombed wooden German decoy airplanes 1944. With wooden decoy bombs.