A long quiet volcano in Ethiopia has roared back to life, blasting ash roughly 9 miles into the sky and catching both nearby communities and scientists off guard. After an estimated 12,000 years ...

The simultaneous eruption of multiple volcanoes suggests a vast, interconnected network of magma exists beneath the surface, powered by the intense gravitational pull of Jupiter.

When an undersea volcano erupted in Tonga in January, its watery blast was huge and unusual — and scientists are still trying to understand its impacts. The volcano, known as Hunga Tonga-Hunga Ha’apai ...

A tsunami triggered by a volcanic eruption decimated some islands of the South Pacific nation of Tonga. The crushing effect on land and infrastructure can be seen from outer space. Three of Tonga’s ...