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TIL in 2007 University of Minnesota researchers found a huge hole in the universe a billion light years across that is not a black hole and is completely devoid of matter.

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via reddit.com

wLP47 TIL - Industrialist Andrew Carnegie, called on the rich to use their wealth to improve society and dedicated the last 18 years of his life to large-scale philanthropy giving away 90 percent of his fortune, $350 million ($65 billion in 2019 dollars) to charities, foundations, and universities
DQaOp TIL that Woody Harrelson’s father was a hitman and organized crime figure, convicted of assassinating a federal judge
JYpYl TIL that a healthy person shares their body with around 10,000 species of bacteria, fungi, and other microbes. They compose around 1 to 3 percent of your body mass. So if you are a 200-pound person, up to six pounds of you are not you—but them.
xJJw TIL that if Microsoft had kept the $150 million investment they made in Apple in 1997, it would be worth $21.9 billion today
Xdxk TIL that in 1795, Napoleon offered a prize to anyone who could invent a way to preserve food and make it portable. A Parisian confectioner spent 15 years experimenting and won the prize.