One of the most deadly and dangerous volcano hazards isn’t lava. Mudflows called lahars can come without clear warning.

A snowcapped backdrop to Seattle and Puget Sound, Mount Rainier is a slumbering giant that last erupted in the 1890s.

Whether you're on the hunt for lunar landscapes or hoping to see a real eruption, this list will help you decide which ...

Standing on the platform at Brooks Falls in Alaska’s Katmai National Park, I wanted to warn the salmon and tell them, “Look before you leap!” I lost count of how many fish ended up in the mouth of the ...