It takes a drop of ocean water more than 1,000 years to circulate around the world.
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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 Caspian Sea is also classed as the world's largest lake.
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Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
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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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The Niagara Falls moves upstream at an average rate of about 295ft a century!
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Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu.
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Australia's Great Barrier Reef is 1,250 miles long!
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