The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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Australia's Great Barrier Reef is 1,250 miles long!
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Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
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A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
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Forest fires move faster uphill than downhill.
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Israel's Dead Sea is 1,312 feet below sea level.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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The average ice berg weighs 20,000,000 tons!
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