An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
In 1850, only 8% of the people in California were women.
0
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
Europe is the only continent without a desert.
62
Every year, Alaska has about 5,000 earthquakes.
31
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
Mexico City is built on top of an underground resevoir!
47