The city of Houston, Texas is built on a swamp and is slowly sinking!
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The Amazon rainforest produces more than 20% the world's oxygen supply.
182
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
Even Antarctica has an area code. It's 672.
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Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Check your map! Virginia extends farther west than West Virginia.
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