A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
Even Antarctica has an area code. It's 672.
58
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
Every year, Alaska has about 5,000 earthquakes.
31
The Dallas/Ft. Worth airport is larger than New York City's Manhattan Island.
62
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Australia's Great Barrier Reef is 1,250 miles long!
45