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

A minor, 3.3-magnitude earthquake struck in Northern California on Monday, according to the United States Geological Survey.

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

Here are United States Forest Service geographic maps defining the 20 major forest cover types in the United States and where common trees are most often located based on frequency of occurrence.