The Caspian Sea is also classed as the world's largest lake.
52
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Check your map! Virginia extends farther west than West Virginia.
67
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
Mexico City is built on top of an underground resevoir!
47
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Australia's Great Barrier Reef is 1,250 miles long!
45