Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
Even Antarctica has an area code. It's 672.
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Every year, Alaska has about 5,000 earthquakes.
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The Caspian Sea is also classed as the world's largest lake.
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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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Check your map! Virginia extends farther west than West Virginia.
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