One cubic mile of seawater contains about 50 pounds of gold.
79
Forest fires move faster uphill than downhill.
52
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
There's a lake under Antarctica that is 25 million years old called Lake Vostok.
109
There are more than 50,000 earthquakes throughout the world every year!
47
Australia's Great Barrier Reef is 1,250 miles long!
45
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14