Scientists one of the US's largest supervolcanoes in California may be about to erupt ... put together evacuation plans anticipating a supervolcano on the brink of eruption for first time in ...

The Long Valley Caldera, a massive supervolcano in California, has been causing unease among researchers due to its potential ...

The Long Valley Caldera in northern California is waking up, and scientists are monitoring it. This supervolcano, whose last blast was some 100,000 years ago, isn’t leading up to another monstrous ...

Beneath the Earth’s surface are ticking time bombs. Two supervolcanoes, located in Italy and California, have long been dormant, but have been stirring as earthquakes in the region become more ...