Hot springs and geysers explode across the landscape as we search for monster Brown Trout in these ancient Icelandic waters.

Helgi Hjorleifsson, a firefighter, is a leader in a national experiment to steer rivers of lava away from important sites.

Scientists have documented that Yellowstone’s rare acidic Echinus geyser has resumed erupting after more than five years of inactivity. The return of one of the park’s few acid-driven geysers ...