Australia's Great Barrier Reef is 1,250 miles long!
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Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
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The Atlantic Ocean is saltier than the Pacific Ocean.
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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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Every year, Alaska has about 5,000 earthquakes.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
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Even Antarctica has an area code. It's 672.
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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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