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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Australia's Great Barrier Reef is 1,250 miles long!
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The Sahara desert expands at about 1km per month.
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In 1850, only 8% of the people in California were women.
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The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
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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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