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TIL: Sweden Almost Had Nuclear Weapons - By the mid-1960s, Sweden has enough fissile material to build a bomb in six months. To deliver the weapon they designed the Saab 36, a twin-engine Mach 2+ supersonic bomber.

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a88y9 TIL The presidential yacht of Yugoslavia, Galeb, was a former Italian and Nazi warship. The Nazis minelayer was sunk by the Allies in 1944 and Yugoslavia raised it, converting it to a yacht in 1952. Ship visitors include Queen Elizabeth II, Khrushchev, Nehru, Nasser, and Kurt Douglas.
4Xpo6 TIL that Roman emperor Vespasian refused to make use of a labour-saving machine because he didn't want the day labourers heavily dependent on building projects to loose their livelihoods.
LkZyZ TIL when French activist, feminist and playwright Olympe de Gouges wrote "Declaration of the Rights of women and the Female Citizen" in 1791, in response to "Declaration of the Rights of Men" of 1789 which came after French Revolution; she was accused of treason and executed.
loJQG TIL that the astronauts of Apollo 11 were refused life insurance, so they signed photos of themselves so that their families could auction them for money in case the landing failed and the crew were killed.
0w9EN TIL pineapple scales form diagonal rows corresponding with numbers in the Fibonacci sequence