The Niagara Falls moves upstream at an average rate of about 295ft a century!
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The Caspian Sea is also classed as the world's largest lake.
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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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There are more than 50,000 earthquakes throughout the world every year!
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Every year, Alaska has about 5,000 earthquakes.
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The warmest temperature ever recorded on Antarctica was 3 degrees F.
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The Sahara desert expands at about 1km per month.
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