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nationalgeographic.org
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TIL that lakes are formed by glaciers, volcanoes, rockslides, beavers, and people.
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TIL Mathematician and computer scientist Grace Hopper identified the first computer bug in 1947. It was a moth stuck inside of a computer.
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TIL that a gorge is basically a smaller version of a canyon. The gorge takes its name from the French word for throat or neck.