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TIL Dallas' first skyscraper, a 15-story, neo-classical tower built in 1909 was torn down in 2012. The tower's site was replaced by a giant 30-foot fiberglass sculpture of an eyeball. The artist said there’s no deep, hidden meaning but he wanted to make something that speaks to a lot of people

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YNNx TIL the Event Horizon Telescope not only took the first photos of a black hole, it’s powerful enough to count the stitches on a baseball 8,000 miles away.
QNl99 TIL Explorer James Cook charted "Sandy Island" near Australia, but it does not seem to exist and was not removed from maps until 1974.
E1baP TIL in 2014 scientists discovered that trees can both absorb, and emit methane
6EgwJ We are going to the moon again to make It a gas station for outer space. "The plan is to break down the lunar ice into hydrogen and oxygen and use those as the fuel propellant."
vlK8 TIL that mollusk teeth are made of the strongest biological material in nature. At 5 times stronger than spider silk, a spaghetti-sized strand can hold the weight of an adult female hippopotamus.