Have you ever wondered how America’s history is shaped by its geography?/.Explore the rich ancestry of the United States, ...

Explore America through the lens of stunning, thought-provoking maps that reveal new insights and surprising perspectives ...

New York City broke a record Tuesday afternoon, hitting 100 degrees Fahrenheit at La Guardia Airport. Tampa, Florida, which ...

California and Oregon are among the U.S. hotspots for dangerous submicron (PM1) air pollution—those with particles less than a micron, or a millionth of a meter wide—according to new research ...

See map of Canadian wildfires Wildfire and smoke map Which states are affected by the Canadian fires? Areas in the following states are "Unhealthy for sensitive groups," according to AirNow ...

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's what to know.