More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Even Antarctica has an area code. It's 672.
58
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
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.
62
In 1850, only 8% of the people in California were women.
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