› added 4 years ago

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TIL that the Pentagon Building has no marble within it. This is because the Pentagon was built during WW2 amd the source of Marble for the government which was Italy was considered an enemy nation.

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MeoWB TIL that for decades the CIA owned and ran Crypto, a Swiss company that supplied cryptography equipment to many countries; naturally, the machines were rigged to give US spooks access to everyone's communications.
VMJX8 TIL In 1950, almost no cases of near-sightedness were found among Eskimo children. But after the advent of compulsory education, eyesight got worse. In 1979, poor eye vision was relatively high among Greenland Eskimos at all ages
m1Vwo TIL our ABO blood group antibodies are due to early minor infections likely from Gram-negative Enterobacteriaceae and Influenza virus epitopes.
VB1BQ TIL the name of a trace fossil is called an ichnotaxon. Genera and species known from such fossils are called ichnogenera and ichnospecies respectively, like in Linnaen taxonomy
M7Rmb TIL about Watermelon Mosaic Virus spread by aphids looks like someone carved crop circles on a watermelon