An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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The water of the Antarctica is so cold that nothing can rot there.
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There are more than 50,000 earthquakes throughout the world every year!
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Every year, Alaska has about 5,000 earthquakes.
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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.
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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