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.
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Mexico City is built on top of an underground resevoir!
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It takes a drop of ocean water more than 1,000 years to circulate around the world.
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Check your map! Virginia extends farther west than West Virginia.
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It's still possible to see the division between East and West Germany due to different light bulbs.
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Forest fires move faster uphill than downhill.
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Australia's Great Barrier Reef is 1,250 miles long!
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