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TIL that as of April 2010, Bill Gates had donated over $36,854,000,000 in his lifetime, which is more than one third of his current net worth of $82. billion.

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GYZJj TIL Men generate their own little heat islands, kind of like walking space heaters. But since women typically have less muscle mass and evaporate less heat through the pores in their skin, they might feel colder than men in a room with the same air temperature
xVL91 TIL that according to a 2010 study from the University of Oxford, big butts result in healthy children because of the high amount of Omega 3 fatty acids (the good fatty acids) stored. These are the same fatty acids that are responsible for the normal development of the baby's brain.
0w1MM TIL that a retired U.S. Army sergeant and Vietnam veteran became the first paralyzed American to successfully finish the New York City Marathon. She used a robotic exoskeleton device to complete 26.2 miles over 3 days.
vPw6D TIL that the Hellenic Navy operates an ancient Greek trireme as an officially commissioned military ship
R5xNl TIL about the North American X-15, a hypersonic rocket-powered aircraft which holds the world record for highest speed ever recorded by a crewed, powered aircraft. The X-15 reached that speed on 3 October 1967, when test pilot William J. Knight flew at Mach 6.7 (4,520 mph; 7,274 km/h).