› added 9 years ago

437

TIL that revolving doors were invented because of one man’s paralyzing fear of opening doors for women.

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5VWKD TIL that the English town of Washington, Tyne and Wear celebrates the Fourth of July as it's the ancestral home of the Washington family
Lk1vV TIL the fangs on the lower jaw of a Fangtooth fish are so large that they slide into specially formed pockets in the roof of the mouth when the jaw is closed. These pockets extend into sockets on either side of the brain.
rNBZy TIL that oranges are a result of crossbreeding between the pomelo and the mandarin, combining traits from both parent species.
67VX TIL The average person has between 1,460 and 2,190 dreams a year, with an average of 4 to 6 dreams per night; but cannot remember over 80% of them.
kJlwg TIL the CIA tested the SR-71 radar signature by mounting it to a pole in the desert (Area 51). It was removed daily just before the Soviet satellite passed above. But since a shadow was created on the hot desert dirt - the temperature differential exposed the exact shape of the jet to the Soviets