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TIL For years, NFL ignored concussion evidence

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VM7xk TIL the ancient Egyptian population around the time they built the great pyramids of Giza was about 1.5 million. Roughly half the population of modern day Athens Greece.
Bmwk TIL during WWII the U.S. submarine Archerfish sank the Japanese aircraft carrier Shinano, but the U.S. Navy did not believe the submarine actually sank a carrier until the acting commander drew a picture of the carrier.
XEQkj TIL there is a Coral Trafficking Task Force here in The Florida Keys.
1a7Jr TIL Queen Elizabeth II is the only living head of state to have served in World War II
d8Ga9 TIL that hunter-gatherer culture was the norm for 90 percent of human history.