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TIL that divorce decrees in Canada circa 1950 could stipulate that a woman must remain chaste in order to continue receiving spousal support

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mZvP TIL that organized “wife swapping” was started in the 1940s on U.S. Air Force bases by fighter pilots and their wives. Researchers found it was “a kind of tribal bonding ritual, with a tacit understanding that the two thirds of husbands who survived would look after the widows.”
rNOld TIL A 14 August 1912 article from a New Zealand newspaper contained a brief story about how burning coal might produce future warming by adding carbon dioxide to the atmosphere.
BrPDd TIL of the battle of Central station where 5,000 soliders refused to do extra duty and walked off camp, crowded trains bound for Sydney where they were joined by 10,000 more soliders and spent the rest of the day raiding pubs and turning over fruit carts.
abWy TIL Bald Eagles go through a crazy color transformation: the first five years they gradually change; the beak turns from black to yellow, the eyes from brown to pale yellow, body feathers from mottled to dark brown, and head and tail feathers from mottled to solid white.
R7Pow TIL Botanist Robert Brown was not the first who discovered Brownian motion (It was Jan Ingenhousz) and Einstien was not the first who described it. But Einstien used Brownian motion to calculate the size of an atom.