An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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In 1850, only 8% of the people in California were women.
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The water of the Antarctica is so cold that nothing can rot there.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
Australia's Great Barrier Reef is 1,250 miles long!
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