The early April earthquake of magnitude 8.6 that shook Sumatra was a grim reminder of the devastating earthquakes and tsunami that killed tens of thousands of people in 2004 and 2005.

Researchers have been able to capture the rise and collapse of an underwater volcano in the Pacific Ocean for the first time.

NASA said on Tuesday that there is no evidence of a massive supervolcano erupting in 2012, despite what some may believe.

A 3-D model of a volcanic explosion, based on the 1980 eruption of Mount St Helens in Washington state, may enhance our understanding of how some volcanic explosions occur and help identify of blast zones for potentially dangerous locations.

When Mount St Helens blew its top in 1980, it wasn't a surprise that it happened, but even today the extent of the damage is hard to fathom.