Europe is the only continent without a desert.
62
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
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
A volcano has enough power to shoot ash as high as 50 km into the atmosphere.
59