There's a lake under Antarctica that is 25 million years old called Lake Vostok.
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The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
The Atlantic Ocean is saltier than the Pacific Ocean.
54
Mexico City is built on top of an underground resevoir!
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