The city of Houston, Texas is built on a swamp and is slowly sinking!
89
If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
The Sahara desert expands at about 1km per month.
90
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
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243