The average ice berg weighs 20,000,000 tons!
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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More than 25% of the world's forests are in Siberia.
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The Atlantic Ocean is saltier than the Pacific Ocean.
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The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
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The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
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