An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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Israel's Dead Sea is 1,312 feet below sea level.
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The warmest temperature ever recorded on Antarctica was 3 degrees F.
171
Forest fires move faster uphill than downhill.
51
The average ice berg weighs 20,000,000 tons!
53
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49