Mount Lassen awoke in a brief series of eruptions between 1914 and 1917. This week marks the centennial of Lassen's sensational eruption in a mushrooming column of ash seen as far away as Eureka and Sacramento.
Intensive research has laid bare the workings of gigantic "internal waves" that roil the deep seas. The results will advance climate models and make a wide range of marine activities more reliable.
A young paleontologist has figured out how to tell male and female stegosaurs apart from the rows of plates upon their backs.
A new study of fossils on an island in the Arctic Ocean show a major episode of extinction that qualifies as a new "great dying."
Tambora brought the world a taste of apocalypse 200 years ago. Today we have better tools to monitor volcanoes like it, but the next eruption of its size will still challenge civilization.
Tsunamis are a worldwide menace with specific local threats. It pays to learn your local situation and keep the knowledge fresh in your community.
Large earthquakes are in our future. When one strikes, there are ways you can help scientists study the event using your phone.
New data from the ancient ice of a tropical glacier shows that lead in gasoline tainted the Earth with the toxic metal far more than any other source, past or present, human or natural.
There's buried treasure here for tsunami hunters, but scarce funding may mean Hawaii remains vulnerable.
Geologists are familiar with something most of us have never seen—spherules, or microscopic balls of natural glass that hide in sediments all over the world. A new study reports a previously unknown kind of spherule that’s forged during volcanic eruptions as lightning lashes roiling clouds of hot ash.
The Bay Area's worst shaker in 25 years revealed -- once again -- where the vulnerabilities are.
The San Francisco Public Utilities opened on Friday a new cement-encased, steel-lined tunnel that runs from Sunol Valley to Fremont. It will carry an average of 265 million gallons of water a day for customers of the Hetch Hetchy Water System Improvement Program, which consists of more than 80 projects to seismically retrofit and upgrade an 80-year-old water system serving 2.6 million people in the Bay Area.
Scientists must play catch-up to industry as we figure out ways to use the deep underground without triggering earthquakes.
Under pressure from a federal deadline and amid news reports that state regulators allowed oil companies to inject wastewater into aquifers clean enough to drink from, officials outlined plans for new safeguards.
The large asteroid Vesta has added flows of material rich in water to its bag of tricks. It's just one more way this small world acts like a proper planet.
Newest Earth science mission could extend the accuracy range of weather forecasts, fine-tune flood forecasts.
For geologists, even with the advent of modern technology, there are instances when older methods are more effective; picks and shovels are sometimes the best complementary tools available for trenching studies.