The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
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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
Check your map! Virginia extends farther west than West Virginia.
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Forest fires move faster uphill than downhill.
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If Manhattan had the same population density as Alaska, there would only be 15 people living there.
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One cubic mile of seawater contains about 50 pounds of gold.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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