One cubic mile of seawater contains about 50 pounds of gold.
79
The Sahara desert expands at about 1km per month.
90
The average ice berg weighs 20,000,000 tons!
54
The state of Florida is bigger than England!
74
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
Forest fires move faster uphill than downhill.
52