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TIL Potential Beginning of Life Simulated in Lab. Scientists at the University of Duisburg-Essen (UDE) have substantiated their theory that life could have begun deep in the Earth's crust. In their experiments, structures that were inanimate developed survival strategies within a short time.

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BrlGb TIL, Sperm whales, the biggest toothed whale on Earth, dont actually have teeth in the top jaw. They instead have sockets in the upper jaw that the bottom teeth fit neatly in to.
9OeD TIL that, as a member of a federally recognized American Indian tribe, not only can I own eagle feathers, I can actually go on a national waiting list to receive an entire American Bald Eagle (deceased).
AD6yn TIL - During WW1 the UK and Canada had battalions comprised entirely of men between 4'-10" and 5'-3" tall known as the Bantam Battalions.
pY1XQ TIL a pigeon named Cher Ami became a war hero in WWI by flying 25 miles to deliver a life-saving message, despite being shot, blinded in one eye, and flying with one leg barely attached she saved 194 soldiers and was awarded a medal, buried with honors, and now rests in the Smithsonian.
1gW7 TIL in 2007, 17-year old Nataline Sarkisyan Died after Cigna Health Insurance denied a life-saving procedure, despite doctors pleas that she receive treatment.