One cubic mile of seawater contains about 50 pounds of gold.
79
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
It's still possible to see the division between East and West Germany due to different light bulbs.
5
An earthquake on Dec. 16, 1811 caused parts of the Mississippi River to flow backwards.
243
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
More than 25% of the world's forests are in Siberia.
51
A waterfall known as The Devil's Kettle empties water into a hole and nobody knows where it ends up!
18