The Niagara Falls moves upstream at an average rate of about 295ft a century!
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The state with the longest coastline in the Continental U.S. is Michigan.
31
Europe is the only continent without a desert.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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The Amazon rainforest produces more than 20% the world's oxygen supply.
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