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TIL Douglas Engelbart showed the world the first computer mouse in 1968 (and he never earned a penny from it)

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8XwX TIL: In 2011 there were 3 known cases around the world of twins coming from different fathers.
dDwrQ TIL Though they have ancient origins the modern western popularity of earth shelters was driven by the 1973 Oil Crisis and back-to-the-land movement. However the most earth shelters are in Northern China, where approximately 10 million people living underground.
yQK5v TIL of a surgery with a 300% mortality rate. During an amputation, Dr. Robert Liston accidentally cut his assistant's fingers off and later slashed an observer's coat. The observer, thinking he'd been stabbed, dropped dead of shock, and the patient and assistant died afterwards of infected wounds.
PYPMg TIL exactly 45 years ago (12/06/73), Nixon used his power under the 25th Amendment to appoint Ford as his new vice president the United States. To date, Ford remains the only person to assume the roles of both President and Vice President without having been elected by the electoral college.
BrQdy TIL research conducted in recent years found that special tongue and throat exercises can strengthen up the area so it stays clear while you sleep, therefore significantly reducing snoring.