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

A U.S. EPA report stated that 55% of U.S. rivers are in bad condition. View this beautiful interactive map for inspiration to protect these waterways.

NOAA forecasts several states in the northern United States will have the best views. If the weather is clear, many in the northern states should be able to see the sky show.

Northern lights put on a show over New York and New Jersey 03:59. The northern lights made an incredible display over much of the United States on Thursday — and might make a return appearance ...