› added 4 years ago

1667

TIL That face blindness is a thing and it sounds like it would be hell to live with. Basically people with it can't use faces to tell people apart, so they have to use other characteristics to tell who is who.

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oRnbL TIL that two surfaces can be bonded purely by intermolecular forces if both surfaces are smooth and flat enough. This is called optical contact bonding.
OoKV6 TIL of Vedem, a Czech-language magazine produced in 1942 by boys aged 13-16 imprisoned at the Terezín concentration camp. The magazine featured things like poems, drawings, essays, and reviews, and was manually copied and distributed around. Around 800 original Vedem pages survived the war.
OGVy4 TIL a hyperandrogenist, Olympic runner, Caster Semenya, underwent gender verification tests to prove to officials she was “female”. Tests showed she had no womb or ovaries & had internal testes.
6ErOl TIL a comets tail always points away from the sun and has nothing to do with the way it is accelerating. This means that the comet can be going into its own tail.
pE5A TIL: Illinois’ Eavesdropping Law Was Originally Passed Because Lobbyists Were Recorded Discussing Which State Legislators Were on the Take