Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
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The Atlantic Ocean is saltier than the Pacific Ocean.
54
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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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.
14
The Caspian Sea is also classed as the world's largest lake.
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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
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18