An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Even Antarctica has an area code. It's 672.
58
The state with the longest coastline in the Continental U.S. is Michigan.
31
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Every year, Alaska has about 5,000 earthquakes.
31
In one day, a full grown redwood tree expels more than 2 tons of water through its leaves.
56
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The water between India and Sri Lanka is only 3-30 feet deep and was purportedly passable on foot until 1480 AD when a cyclone moved some sand around.
1