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TIL that the oysters in Chesapeake Bay used to be able to filter the entire volume of water in 3 days. This process now takes nearly a year.

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KdN6 TIL that Sir Isaac Newton invented calculus in approximately the same amount of time the average student learns it in University.
nWkEW TIL that a single sunflower is actually an inflorescence made of up to thousands of smaller flowers
7rZ0L Today I Learned the Clocks Turned "Clockwise" Because of Sundials; As The Sun Moves Across the Northern Hemisphere's Sky, The Shadow it Casts Moves Clockwise, and The First Mechanical Clocks Simply Kept Up This Tradition
xyl5 TIL George R.R. Martin writes all his novels in DOS using the ancient word processing program WordStar
5pJB TIL that during the 1991 Gulf War, 12 American M1A1 Tanks destroyed 28 Iraqi tanks, 16 personnel carriers, and 30 vehicles in less than 30 minutes.