The population is spread out among 3.8 million square miles across 50 states, yet nearly one-third of Americans live in just three states: California, Texas and New York.

In many parts of the world land is moving down faster than the sea itself is going up', explained the lead author of the ...

A second measles-related death was reported out of New Mexico this week. Here's where measles cases have been reported in the U.S. this year.