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 city of Houston, Texas is built on a swamp and is slowly sinking!
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The state with the longest coastline in the Continental U.S. is Michigan.
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Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
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There are more than 50,000 earthquakes throughout the world every year!
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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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 longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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