A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18
The state with the longest coastline in the Continental U.S. is Michigan.
31
One cubic mile of seawater contains about 50 pounds of gold.
79
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59
Europe is the only continent without a desert.
62
The state of Florida is bigger than England!
74
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
