Misuse of alcohol or other drugs is a common cause of physical and mental health problems in older Americans, especially older men. Rates of illicit drug use and dependence are lower in the older population than in younger people.
This explosion was the most powerful in a 1914-17 series of eruptions that were the last to occur in the Cascades before the 1980 eruption of Mt. St. Helens. Lassen Peak is the largest of a group of more than 30 volcanic domes erupted over the past 300,000 years in Lassen Volcanic National Park.
The Yellowstone volcanoâs first major eruption occurred 2.06 million years ago. A second eruption followed 1.3 million years ago and a third 640,000 years ago. The series has led many to wonder whether it explodes about every 700,000 years, leaving the caldera primed for another blast.