On the flanks of Washington State Mount Rainier, a spike in seismic rumbling has revived an old, unsettling question for the Pacific Northwest: what happens when the region’s most dangerous volcano ...

A video shared this week shows what looked like signs of eruption on Mount Rainier Authorities explained that it's not an eruption but a cloud formation They say it's a good reminder to be prepared ...

America’s deadliest volcano has just rattled through more than 1,000 tiny earthquakes in a matter of days, a drumbeat of tremors that has revived old fears about catastrophic mudflows racing down its ...