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TIL that blind people may detect and respond to light if it is a kind of skyblue light at 481nm. "There is more to the eye than rods and cones — the discovery of a third photoreceptor is rewriting the visual rulebook."

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EEGP TIL that when he was challenged to a duel by Prussian statesman Otto von Bismarck in 1885, scientist Rudolf Virchow selected two pork sausages as the weapons to be used.
0dv7y TIL in 2000 the LA Zoo had an issue containing two gorillas, Evelyn & Jim, who were both skilled escapists. Evelyn once used a vine to swing across a 12-ft wide moat to spent 90 min watching giraffes & elephants. Previously she swatted a person's behind. Jim once jumped straight over a 12-ft wall.
7rJ4r TIL actress Anne Ramsey - better known as Mama Fratelli in "The Goonies" and Mrs. Lift in "Throw Momma From The Train" - had a famously unique speech slur left over after surgery from esophageal cancer in 1984. That cancer would later return in 1988, and was the ultimate cause of her passing
g517 TIL of the Peter Principle; anything that works will be used in progressively more challenging applications until it fails. Applied to a workplace, this means “every employee tends to rise to their level of incompetence”.
Oo4Zg TIL in 1832, a US ship was captured by pirate Pedro Gilbert. After, he had part of filled with explosives, before setting it on fire with the crew trapped inside. However, they escaped and doused the flames, letting smoke billow out until the pirates had left. 6 weeks later, they returned to port.