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
The state with the longest coastline in the Continental U.S. is Michigan.
31
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Mexico City is built on top of an underground resevoir!
47
The warmest temperature ever recorded on Antarctica was 3 degrees F.
175
The city of Houston, Texas is built on a swamp and is slowly sinking!
89
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The Atlantic Ocean is saltier than the Pacific Ocean.
54