An underwater volcano off Oregon's coast is likely to erupt in 2025, according to scientists monitoring the situation. Axial Seamount—the most active volcano in the northeast Pacific Ocean—is located ...
One of the most explosive volcanoes in U.S. history began its eruption with a trickle, not a blast. Mount St. Helens' gas-laden magma oozed into the cone before the mountain finally erupted in 1980.