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TIL that DARPA developed an aircraft that reached speeds between Mach 17 and Mach 22

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R7Dw7 TIL Orcas, or "killer whales," are actually dolphins.
JYWV4 TIL Finland has ten trees for every person in the world
JYEDk TIL that in Churchill, Canada, locals keep their car doors unlocked in order to provide other residents a quick escape, should they encounter a polar bear
womN8 TIL: The "Festival of Drunkeness" in Ancient Egypt celebrates the sensory elements of life and pleases the goddess Hathor and participants believed alcohol saved humanity. There was drinking, dancing, and sex to the point of passing out and being woken by temple bells the next day for prayer.
xRDo TIL During the Korean War, A battalion of 200 U.S. troops, thought to de dead, emerged from behind enemies lines, led to safety by a 10 yr old South Korean boy. The boy was installed as unit mascot.