A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
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
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25