Deadly and destructive wildfires erupt in the US each year, burning millions of acres and destroying thousands of homes. CNN is tracking the trends.

This map, which updates every 30 minutes, shows the air quality in your area.

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 ...

State lines are one way to picture the US, but natural history provides another – one that shows the ancient and living ...

Admit it, once Google Earth was rolled out, you absolutely took a disproportionate amount of time checking out all the localities and areas on it to see if you can find something nostalgic, cool, or ...

A new national wastewater map is offering a window into the spread of the highly contagious norovirus across the United States.