Mapping out geology across the U.S. is surprisingly difficult, but the USGS has managed just that, and its map is more ...

The U.S. conducts several intercontinental ballistic missile test launches each year to maintain its nuclear deterrent.

President Donald Trump has called for Republican states to redraw their U.S. House districts ahead of next year's elections.

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 ...