With 174 active wildfires burning across Canada, several U.S. states are under air quality alerts due to the traveling smoke from these flames.

A recent U.S. Environmental Protection Agency report concluded that 55% of United States rivers ... beauty for all of us. Above is a different version of the zoomed-out map. It shows a different ...

How well do you know the United States? These 20 maps offer an overview of the economy ... prepare to head to the polls on November 5. The US has the largest Gross Domestic Product (GDP) in ...