If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
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
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
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Due to gravitational effects, you weigh slightly less when the moon is directly overhead.
55