There are more than 50,000 earthquakes throughout the world every year!
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More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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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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Even Antarctica has an area code. It's 672.
58
The Sahara desert expands at about 1km per month.
90
The North Atlantic gets 2.5 centimetres (1in) wider every year.
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