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

Maps are an important tool for learning about the world around you. Some maps are designed to show what roads will take you where, and others are designed to tell you about the actual land in a given ...

A series of live maps from Windy.com highlighted which parts of the U.S. were experiencing elevated levels of air pollution on Friday. The maps showed data for multiple types of pollutant, including ...

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 ...