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
Even Antarctica has an area code. It's 672.
58
Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
8
The Sahara desert expands at about 1km per month.
90
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
