The state with the longest coastline in the Continental U.S. is Michigan.
31
Mexico City is built on top of an underground resevoir!
47
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
Check your map! Virginia extends farther west than West Virginia.
67
10 of the tributaries flowing into the Amazon river are as big as the Mississippi river.
41
Every year, Alaska has about 5,000 earthquakes.
31
The Caspian Sea is also classed as the world's largest lake.
52
