One of the world’s oldest national parks, Mount Rainier became part of the federal ... one of the world’s most active volcanoes. The Sicily, Italy, volcano is almost constantly in a state ...

Experts believe a Mount Rainier eruption would post a grave threat to millions who live in the southern and eastern sections ...

The snowcapped peak of Mount Rainier, which towers 4.3 kilometers (2.7 miles) above sea level in Washington state, has not produced a significant volcanic eruption in the past 1,000 years.