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TIL The famous PBR river boats that the US used in the Vietnam war had pump-jet engines made by Jacuzzi

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G4Gj TIL that a post WWII tank that was used in a nuclear test (and was still drivable, they just had to refill the fuel tank) stayed in service for 23 years afterwards and saw combat
d8d89 TIL a man declared dead in 2010 rail accident was found alive in Kolkata. His family had claimed a compensation of ₹400k and a government job for his sister.
ndWB TIL the pilot of an Aeroflot Airbus A310 let his son sit at the controls during a flight in 1994. His son turned off the autopilot controls, crashing the plane, and killing all 75 on board.
dDaW7 TIL breeder reactors are nuclear reactors that generate more fissile material than they consume
R76p4 TIL a bee creates lift by clapping its wings together above its back. When the wings separate, air fills the void, and the downward swinging wings generate lift. The failure to account for this is the basis for the myth that bees shouldn’t be able to fly.