COBB, Calif. - A 3.3 magnitude earthquake struck Lake County and near parts of Sonoma County Friday afternoon. The USGS ...
More than 300 million visitors explored America’s national parks last year, from Acadia in Maine to Zion in Utah.
After we arrived, I turned on walking directions for the hike I had saved so I could easily track how far we had gone. The ...
high-resolution national elevation data from the USGS 3D Elevation Program, and advanced computing to build a comprehensive landslide susceptibility model. The resulting map of the contiguous U.S., ...