The average ice berg weighs 20,000,000 tons!
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The Caspian Sea is also classed as the world's largest lake.
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There are more than 50,000 earthquakes throughout the world every year!
47
Europe is the only continent without a desert.
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Mexico City is built on top of an underground resevoir!
47
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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