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TIL in 1972, diver Bret Gilliam survived a 325+ ft ascent, with an empty oxygen tank, after trying to save a colleague from attacking sharks.

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9Y6EM TIL there is no universal definition for what makes a fish a sardine. The word sardine isn't specific to any one species of fish. It's an umbrella term applied to multiple species of fish under a certain size. 21 different species are all called Sardine.
6EGjQ TIL that most people like the color orange less and less as they grow older
nWxQd TIL about The Euthanasia Coaster, a hypothetical steel roller coaster designed as a euthanasia device to kill its passengers. The concept was conceived in 2010 and made into a scale model by Lithuanian artist Julijonas Urbonas, a PhD candidate at the Royal College of Art in London. Urbonas, who ha
ep4mJ TIL Joseph Kerwin was the first American physician to go to space and had the first chance to study space medicine. Ready on Skylab with a minor surgery kit and drugs, a dislocated finger was the most serious ailment any of the three astronauts experienced when he was there
Oo9p4 TIL of Joe Ekins, a Sherman Firefly gunner, who had never fired his gun in combat before, destroyed 3 Tiger tanks in 12 minutes.