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TIL of Dr Randy Lovelace II, a Lt. Col. in the US Army Air Corps who worked on oxygen systems for high altitude jumps. In 1943 he volunteered to test his mask and jumped from a B17 at 40,000ft. The force of that deceleration knocked him out. tore his gloves off and frostbit his hand but he survived.

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45Q5 TIL in the UK if you dial 999 but can’t audibly signal the operator you can press ‘55’ to signal that you are in danger
X0pdP TIL that Shattered was a British TV series where ten contestants were challenged with going without sleep for seven days. Due to sleep deprivation contestants became hostile and irrational and one believed himself to be the Prime Minister of Australia. The winner was awake for 178 hours
44D6 TIL that the only Counter-Terrorism unit to end a hijacking while the plane was still in the air was the austrian EKO Cobra
GA9V5 TIL the oldest known crocodile, "Mr. Freshie," lived to be an estimated 140 years old after being captured and rehabilitated by Steve Irwin and his team at the Australia Zoo
DDNv TIL that the Gretzky brothers hold the NHL record for the most goals scored by a set of brothers, with a total of 2,861. Of which Wayne scored 2,857 and Brent scored 4.