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TIL that in the XIX century there was a major social movement to limit the working time to 8 hours a day, or 40 hours a week

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rRK0x TIL During pregnancy, the baby growing in its mother’s womb needs plenty of calcium to develop its skeleton. If the mother doesn’t get enough calcium, her baby will draw what it needs from the mother’s bones. Women often lose 3 to 5 percent of their bone mass during breastfeeding, and recover after
BgdNk TIL of the Canadian commander Charles De Salaberry who defeated the American invasion of Montreal. Salaberry deployed marching buglers to play in all different directions, meaning his American opponents didn’t know how many men he had or what direction they were coming from.
l7REV TIL: Philip II, father of Alexander the Great, is credited with creating one of the earliest professional armies in the world, ruling from 359-336BC. Philip’s reforms led to Macedonia becoming hegemon of the Greek peninsula, paving the way for Alexander’s conquest of Persia by 326 BC.
4aMJ TIL Mark Twain was born and died in the same years that Halley’s Comet flew by the Earth. Twain said, “I came in with Halley’s Comet in 1835. It is coming again next year, and I expect to go out with it.” He died of a heart attack day after the Comet’s closest approach in 1910.
lA41 TIL actor Martin Sheen has been arrested a total of 66 times for protesting and acts of civil disobedience - most recently in 2007 for trespassing at a Nevada nuclear test facility.