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.
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The 'King Ranch' in Texas is bigger than the state of Rhode Island.
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The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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Check your map! Virginia extends farther west than West Virginia.
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