Flu activity is at "high" or "very high" levels in 32 states and jurisdictions, according to the Centers for Disease Control ...

Decades, national pollution averages masked the true scope of carbon dioxide emissions, hiding dangers from nearby factories, ...

The U.S. population is spread out among 3.8 million square miles across 50 states, yet nearly one-third of Americans live in just three states: California, Texas and New York. New York City alone has ...

Over a third of the United States federal government's revenue comes from the country's four most-populous states, but they often get back less than they contribute. Known as "donor states," 19 states ...

States across the U.S. are feeling the impact of the Canadian wildfires as air quality takes a hit from the smoke, according to a government website that tracks air quality in the United States. As of ...