Explosion at Yellowstone Park sends visitors running
Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, joins LiveNOW's Carel Lajara to explain what happened during an explosion at Yellowstone National Park this week.
Mike Poland, Scientist-in-Charge of the Yellowstone Volcano Observatory, joins LiveNOW's Carel Lajara to explain what happened during an explosion at Yellowstone National Park this week.