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
Mexico City is built on top of an underground resevoir!
47
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
The water of the Antarctica is so cold that nothing can rot there.
334
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
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