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

Over decades, geologists had built up a history of eastern North America by mapping rocks on Earth’s surface. But they got a much better look, and many fresh insights, starting around 2010.

A map shows the impact on U.S. states along the Gulf Coast and the Eastern Seaboard from Tropical Storm Sara. The storm is expected to weaken after it passes through Central America this weekend.

Because of recent wet weather, most Eastern states won’t be starting summer with a drought. That’s good news. Those are the places where the summer ahead may have a tendency to be wetter.

The map currently shows that the worst air quality in America is in Minnesota, Wisconsin, Iowa, Illinois, Michigan, and Indiana—the states directly under some of the worst fires in Manitoba and ...

Wildfire season in Canada got off to an intense start this year, and fires have been sending smoke throughout North America. This is the current status of air quality across the United States and ...