Alaska, largely unspoiled wilderness, looks like something out of The Lord of the Rings.

The striking Kawah Ijen volcano in Indonesia is known for emitting what appears to be blue lava as soon as the sun sets.

Mount Spurr in Alaska – rising some 3,370 meters or 11,070 feet above sea level  – could be about to erupt, with the number ...

A swarm of more than 100 shallow earthquakes at Alaska's Mount Spurr that began Sunday night and ran to Monday morning ...

A truly remarkable quirk of the natural world - this volcano lights up the night sky in an iridescent blue when its sulphuric ...