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
Mexico City is built on top of an underground resevoir!
47
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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There are more than 50,000 earthquakes throughout the world every year!
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There are approximately three chickens for every human on Earth.
13
The average ice berg weighs 20,000,000 tons!
54
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49