Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
One cubic mile of seawater contains about 50 pounds of gold.
79
There are more than 50,000 earthquakes throughout the world every year!
47
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 Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
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