› added 1 year ago

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TIL: the water speed record hasn’t been broken in over 45 years

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KOAM9 TIL that in 1968, four submarines sank mysteriously. An Israeli sub disappeared in January - four days later, a French sub went missing and was never seen again. In March a Soviet sub exploded and sank, and in May a US sub also exploded and sank - both causes remain officially unknown.
8nbG TIL that Grapple is simply just an apple soaked in Methyl Anthranilate (artifical grape flavoring).
x6Nvk TIL that because all US banknotes are the same size, making telling them apart hard-to-impossible for the blind, the US Bureau of Engraving and Printing provides an electronic device (the iBill Currency Identifier) that can identify the value of the bills free of charge.
d8DG9 TIL the guards at the tomb of the Unknown Soldiers at Arlington National Cemetery actually yell at you when you are disrespectful
PYQvV TIL only 12.5% of US serial killers fit the profile most often typified in media today— an intelligent, white male in his 20s.