An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
The names of the continents all end with the same letter with which they start, excluding the North and South infront of AmericA.
86
Forest fires move faster uphill than downhill.
52
The average ice berg weighs 20,000,000 tons!
54
More than a dozen men have stood on the surface of the moon, but only three have been to Challenger Deep in the Marianas Trench, the deepest known spot in the ocean.
17
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
Check your map! The Pacific entrance of the Panama Canal is farther East than the Atlantic entrance.
40
Check your map! Virginia extends farther west than West Virginia.
67