Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

An air quality map shows conditions improving in the U.S. Friday as smoke from the Canadian wildfires subsides.

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Here is an index map of 20 major timber types in the United States as ...

Now, for the first time, a team of researchers from Princeton University and the University of Delaware has created a comprehensive map of migratory pathways and stopover locations in the Eastern ...

Polluted air will remain a threat Friday for millions of Americans across the eastern United States as the Canadian wildfires continue to send smoke billowing across the region, tinging the skies ...

According to the NOAA, 24 states, including Alaska, Montana and North Dakota, might have a chance to see the northern lights ...

While the smoke may cloud your vision of the sky or ruin a day at the beach on this week's warmest days of the season so far, it is more than just a nuisance. All across the U.S., the smoke is causing ...

Learn about these tiny ecological powerhouses before you visit them at the Smithsonian’s National ... in the Eastern and Appalachian regions of the United States – and in a healthy forest ...

In a stunning new map ... known as ‘ghost forests.’ And, they’re something scientists call one of the most visible markers of climate change in the Eastern United States.