The warmest temperature ever recorded on Antarctica was 3 degrees F.
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An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
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Australia's Great Barrier Reef is 1,250 miles long!
45
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
One cubic mile of seawater contains about 50 pounds of gold.
79
The Caspian Sea is also classed as the world's largest lake.
52
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119