Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The average ice berg weighs 20,000,000 tons!
54
The Sahara desert expands at about 1km per month.
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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
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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The Amazon rainforest produces more than 20% the world's oxygen supply.
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Even Antarctica has an area code. It's 672.
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