› added 4 years ago

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TIL The British secret service, MI6, used semen as invisible ink during WWI

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RxZ1 TIL Pimps wear lots of gold jewelry bought at pawn shops to “re-pawn” for bail money since cash is confiscated upon arrest but jewelry is not
0O1 TIL the first MP3, created in 1987 by Karlheinz Brandenburg, was Suzanne Vega’s “Tom’s Diner”. He chose it because the human voice is hardest to compress and believed Vega’s a capella was the perfect test.
R7547 A helium balloon on the moon might as well be made of lead. For any balloon to stay aloft in any atmosphere, the gas inside it must be lighter than the surrounding air.
joKv TIL that Carl Sagan and the 14th Dalai Lama had a 35 hour communication captured on film.
DvnP TIL that the emperor penguin can dive to a depth of 1,850 ft (565 m) - deeper than any other bird, and deeper than the operational range of most naval submarines