The Caspian Sea is also classed as the world's largest lake.
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More than 25% of the world's forests are in Siberia.
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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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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Australia's Great Barrier Reef is 1,250 miles long!
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A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The Sahara desert expands at about 1km per month.
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There are more than 50,000 earthquakes throughout the world every year!
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