10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
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
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
The Atlantic Ocean is saltier than the Pacific Ocean.
54
Forest fires move faster uphill than downhill.
52