A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
Check your map! Virginia extends farther west than West Virginia.
67
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
One cubic mile of seawater contains about 50 pounds of gold.
79
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55
Australia's Great Barrier Reef is 1,250 miles long!
45
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
Every year, Alaska has about 5,000 earthquakes.
31