If Manhattan had the same population density as Alaska, there would only be 15 people living there.
138
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
Forest growth in the US has exceeded harvest since the 1940’s. Today, we have more trees than any time in the past 100 years.
14
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59