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TIL the common ancestor of all vertebrates had not 3 but 4 cones for detecting color. Most mammals later lost 2 cones from being nocturnal and primates evolved one back after that!

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1j97 TIL that “Elephants are capable swimmers. They have been recorded swimming for up to six hours without touching the bottom, and have travelled as far as 48 km (30 mi) at a stretch and at speeds of up to 2.1 km/h (1 mph).”
a0kZ TIL EA had to do a mass recall because somebody hid an episode of South Park inside Tiger Woods 99
KYwOQ TIL there’s a 7-story rock in a desert near Joshua Tree in California that 1) is maybe the largest freestanding boulder in the world, 2) once had a 24ft by 36ft apartment dug underneath it, and 3) hosted 20 years of Flying Saucer Conventions starting in the 1950s
kJ4NE TIL the New York Jets have never beaten the Philadelphia Eagles. The first time they played was in 1973.
eKEk TIL there are rainbow mountains in China that have formed as the result of 24 million years of multicolored sandstone pressed together.