It takes a drop of ocean water more than 1,000 years to circulate around the world.
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Even Antarctica has an area code. It's 672.
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Australia's Great Barrier Reef is 1,250 miles long!
45
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The Sahara desert expands at about 1km per month.
90
In 1850, only 8% of the people in California were women.
0
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48