If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The Niagara Falls moves upstream at an average rate of about 295ft a century!
48
Australia's Great Barrier Reef is 1,250 miles long!
45
Check your map! Virginia extends farther west than West Virginia.
67
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Europe is the only continent without a desert.
62