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TIL: That orange-fleshed sweetpotato is good for healthy babies

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Oolve TIL "pH" stands for "potential of hydrogen" - the more hydrogen ions in a liquid, the more alkaline it is
yVZQ8 TIL In 2003 Space Shuttle flight director knew that Columbia's Thermal Protection System was damaged but decided to not tell the crew. He thought it would be better for them to have a happy successful flight and die unexpectedly during entry than to stay in orbit with oxygen running out
WkLE9 TIL in the 1907 Sydney Bathing Suit Protests thousands of men poured onto Sydney's beaches wearing wearing "their sisters' or grandmothers' underwear, ballet frills, curtains or tablecloths" To protest an increase in clothing regulations.
ApX4 TIL that South Africans call Traffic Lights “Robots”.
9wMM7 TIL that the famed mystery author Agatha Christie was an avid surfer, and first learned the sport in 1922. She is thought to be the first western woman to stand up on a surfboard.