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TIL fine particles of dust can explode and rapidly combust, even innocuous objects like flour or corn starch, due to the very large surface area of dust relative to its mass. One incident at a "color party" throwing colored corn starch resulted in 15 dead and 498 suffering from burns.

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mxN1E TIL of a rare, endangered marsupial that produces fatal levels of testosterone during 3-week "sex marathons." By the time the babies are born each year, all of the adult males have dropped dead.
Oopo4 TIL Thomas Jefferson made his own version of the Bible stripping Jesus of his divinity, miracles, and the resurrection and until the 1950s each newly elected US Senator received a copy.
GwWE TIL During the Civil War, a man gained national recognition by repeatedly auctioning off a plain sack of flour. By doing so, he raised $250,000 which aided wounded soldiers.
GAlbg TIL This Alkaline African Lake Turns Animals into Stone
8oPG TIL that before the heart/lung machine was invented, a doctor oxygenated his patient’s blood by routing it through another person. Parents often served this purpose while their children had heart surgery.