Mount Shasta presents a unique challenge that most other active volcanoes don't for USGS scientists. The only place to sample ...

For outdoor exploration in stunning national parks, California is the land of plenty. From the towering trees of Sequoia National Park, to the undulating, Mars-like landscapes of Death Valley, there's ...

California’s volcanic giants are hard to miss. Mount Shasta looms over the Oregon border. Lassen Peak, the southernmost active volcano in the Cascade Range, erupted just over a century ago, blasting ...