A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
One cubic mile of seawater contains about 50 pounds of gold.
79
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! Virginia extends farther west than West Virginia.
67
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Louisiana is the only state that grows in land area every year (Due to alluvial deposits from the Mississippi River).
41