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
One cubic mile of seawater contains about 50 pounds of gold.
79
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
The water of the Antarctica is so cold that nothing can rot there.
334