Pack long underwear, a wool sweater, a down jacket, and a wind- and waterproof outer layer (like a Gore-Tex jacket and pants) ...

Contrary to popular belief, it’s not the big-name volcanoes like Yellowstone and Mount Etna in Sicily that pose the greatest ...

Yellowstone’s volcanic system sits beneath one of the most visited national parks in the United States, yet its rare ...

Deep beneath Yellowstone’s famous geysers, a hidden world of microbes and magma is responding to earthquakes in ways ...

Percolating downwards, the extra water eventually found its way into a major fault zone that slices through the 12km-long ...