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TIL Sharks have been around on Earth longer than Trees

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eO9E TIL US Army has a working prototype of a land-based laser cannon that can be guided by an Xbox controller
xVWm7 TIL the guy on the cover of The Best of Kansas is the abolitionist John Brown
NENb TIL a man built a restaurant in Northern Iraq called MaDonal’s after McDonald’s turned denied his request. The restaurant serves items such as “Big Macks,” and serves free food to U.S. forces, and thus has been threatened by suicide bombers, turning the man into a local celebrity.
BrlEx TIL of Douglas "Wrong Way" Corrigan, who in 1938 flew across the Atlantic in an experimental aircraft. Despite the Air Traffic Controller deeming it a suicide flight, and a fuel leak, he successfully completed the trip. He claimed to have lost his way in the clouds and lost his license for 2 weeks.
XE7Vj TIL usually people blink 20 times per minute but only 7 times while using computer