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
It takes a drop of ocean water more than 1,000 years to circulate around the world.
61
Every person in the world can fit in Texas and be given over 1000 sq ft in which to live.
14
The state with the longest coastline in the Continental U.S. is Michigan.
31
Connecticut and Rhode Island never ratified the 18th Amendment (Prohibition).
25
Forest fires move faster uphill than downhill.
52