Visual observations have been a backbone of volcano research more than 2,000 years and remain fundamental to understanding ...

Add Yahoo as a preferred source to see more of our stories on Google. Volcanoes in Alaska, Washington state, Oregon and Hawaii have been rumbling and even spewing lava, enough to spark a swarm of news ...

Scientists know that changing tree leaves can indicate when a nearby volcano is becoming more active and might erupt. In a new collaboration between NASA and the Smithsonian Institution, scientists ...

This week the U.S. Geological Survey Cascades Volcano Observatory, in cooperation with the U.S. Forest Service and Mount Hood National Forest, installed three new volcano monitoring stations on the ...

American Samoa is a United States territory which comprises the easternmost islands of a volcanic island chain formed by the Samoan hotspot in the South Pacific Ocean. Its small islands are the tops ...

Carbon dioxide emissions from rising magma is one of the earliest signs that a volcano is waking up, but measuring it directly is notoriously difficult. Reading time 2 minutes Forecasting volcanic ...

Volcanoes can erupt suddenly, but satellite technology now detects hidden ground shifts and heat changes. This helps scientists monitor remote volcanoes where ground sensors are scarce. These advanced ...

The planned lease termination of the Alaska Volcano Observatory in Anchorage has been reversed amid threats of a volcanic eruption. The observatory had appeared on lists of federal building leases set ...

Beneath the surface of the northeast Pacific Ocean, hundreds of kilometres off the coast of Oregon, one of the world’s most closely observed underwater volcanoes continues its quiet, steady ascent.

Technology designed to detect nuclear explosions and enforce the world's nuclear test-ban treaty now will be pioneered to monitor active volcanoes in the Northern Mariana Islands near Guam. The island ...