› added 3 years ago

118

TIL that Martin Van Buren is the only president who's first language wasn't English - it was Dutch.

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9BaD TIL 6 months before the Challenger disaster a lone engineer told his superiors about the O-Ring problem and warned the result “would be a catastrophe of the highest order - loss of human life”.
1enD TIL octopuses have 3 hearts, their tentacles have minds of their own, and have been in existence for millions of years prior to dinosaurs.
epZOk TIL that IBM, a company well-known for the IBM PC which became an industry standard personal computer in the 80s, also manufactured M1918 Browning automatic rifles during WWII.
7rgMX TIL During World War 2, an edible explosive was created under the code name “Aunt Jemima”-it was a mixture of flour and the powdery explosive HMX. It could pass for flour and even be used in cooking. It was smuggled by Chinese guerrillas to bypass Japanese checkpoints.
BgQRk TIL that veins only appear blue because if the way wavelengths of light hit the skin