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
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Forest fires move faster uphill than downhill.
52
In 1850, only 8% of the people in California were women.
0
There are approximately three chickens for every human on Earth.
13