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TIL that Mantis Shrimp have a second pair of thoracic appendages that are adapted for powerful close-range combat; their claws can accelerate at a rate comparable to that of a .22 caliber bullet when fired.

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RZNj TIL Congress appropriated money in 1906 to paint The Statue of Liberty because a green patina had covered its once dull-copper skin. The effort was halted largely due to public outcry and only the interior was painted.
ZpKY TIL that elephants can purr
wjw8 TIL: As a result of China’s “one child” policy and sex-selection abortions, China has 30+ million surplus single men between age 25-40. That’s more than the combined population of adults in New York and Texas who will never find a mate.
BMeK TIL some anthropologists believe that beer was responsible for the rise of human civilization.
mx1Rx TIL that some famous Beatles songs had hilarious working titles. “Yesterday” was originally called Scrambled Eggs, “With a Little Help From My Friends” was originally called Bad Finger Boogie, etc