We're waiting to see if Mount St. Helens will erupt again inWashington State, but we never hear about volcanic activityon the East Coast of the U.S. There's a scientific reasonfor this.
Sally Harris writes that the kinds of geological conditionsthere don?t support volcanic activity. Geoscientist R.J.Tracy says, "The active margin of...
Scientists are surprised to find that four dormant volcanoes in South America are actually active, a discovery that has serious implications for volcanic areas around the world. They used satellite imaging techniques to study the volcanoes and found that 900 of them in the Andes mountains in Chile are still potentially dangerous.
The most dangerous type of volcanic eruption can be set off by heavy rain, meaning that watching the weather could save lives. This type of eruption is a "dome collapse," which has caused more than 70% of the volcano-related deaths over the past century. "They tend to be big, violent eruptions," says volcanologist John Murray.
The build-...
A small explosion at Mexico's Popocatepetl volcano caused a light fall of ash on Wednesday. The 17,886-foot Popocatepetl volcano has been erupting off and on since December 1994.
Scientist have recorded low-level tremors within the volcano, which is 40 miles southeast of Mexico City, and several clouds of gas have escaped from its...
Volcanoes in the Philippines and Indonesia are threatening to erupt. In the central Philippines, the Mayon volcano puffsout gas and ash, as scientists warn that it may erupt sometime in February. Last year, it drove 68,000 people from their homes. There have also been minor earthquakes around the 8,100 foot mountain.
Its most violent...