Mount St. Helens rattled by recent earthquakes
Dr. Harold Tobin, a seismologist and professor at the University of Washington, joins LiveNOW's Austin Westfall to examine why Mount St. Helens has been rattled by recent earthquakes.
Dr. Harold Tobin, a seismologist and professor at the University of Washington, joins LiveNOW's Austin Westfall to examine why Mount St. Helens has been rattled by recent earthquakes.