The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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Every year, Alaska has about 5,000 earthquakes.
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In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
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The Sahara desert expands at about 1km per month.
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The water of the Antarctica is so cold that nothing can rot there.
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There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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Check your map! Virginia extends farther west than West Virginia.
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