They discover that the “breath” of the Uturuncu volcano comes from underground fluids, indicating a low risk of eruption.

Think about a mountain that keeps getting taller but never explodes. This might sound impossible, yet it happens more often ...

Waves in Earth's mantle created by the rifting of continents may peel the planet's crust from below, feeding volcanoes in the middle of the ocean.

Forty years after the Nevado del Ruiz volcano wiped out the town of Armero, the ghosts of Colombia's deadliest tragedy still haunt its slopes, and families are still searching for lost children.