The Niagara Falls moves upstream at an average rate of about 295ft a century!
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Europe is the only continent without a desert.
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It takes a drop of ocean water more than 1,000 years to circulate around the world.
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The state with the longest coastline in the Continental U.S. is Michigan.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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The Sahara desert expands at about 1km per month.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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