Australia's Great Barrier Reef is 1,250 miles long!
45
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
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
Every year, Alaska has about 5,000 earthquakes.
31
Check your map! Virginia extends farther west than West Virginia.
67
The Caspian Sea is also classed as the world's largest lake.
52
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109