Nearly all of California has a more than 95% chance of a damaging earthquake in the next century, a new United States Geological Survey map shows. The new USGS National Seismic Hazard Model ...

The USGS has revealed than around 71 to 95 million Americans may rely on groundwater supplies with detectable levels of PFAS.

USGS geophysicist Mark Petersen told SFGATE the ... The model itself is highly complicated, but a color-coded map that was ...

A recent report by the US Geological Survey (USGS) shows that much of Connecticut’s public groundwater supply areas, including areas that provide water to the state's largest cities, have a high ...