The Niagara Falls moves upstream at an average rate of about 295ft a century!
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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The Sahara desert expands at about 1km per month.
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The Amazon rainforest produces more than 20% the world's oxygen supply.
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The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
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A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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