Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high ...

A heat wave is currently affecting about 160 million people, according to the National Weather Service. Here's which states ...

A minor, 3.6-magnitude earthquake struck in Northern California on Monday, according to the United States Geological Survey.

The U.S. is in peak flu season, as the CDC releases a map of influenza activity across the country. See which states are at the highest risk of flu activity.

USA States List: The United States of America, or the USA, consists of 50 states. Let us look at the list of the states in the USA along with their capitals. Check out the details here.

The map of flu activity across the United States continues to darken, both figuratively and literally, as case numbers spike upward in most states, according to the Centers for Disease Control and ...