"What makes the event even more extraordinary is that it did not involve a single volcano, but multiple active sources." ...

How big can volcanic eruptions get on Jupiter’s moon, Io? This is what a recent study published in the Journal of Geophysical Research: Planets hopes to address as an international team of scientists ...

Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help planners anticipate future mudflows.