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 ...

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.

Social media users are escalating the long-simmering battle between Washington and Oregon into an all-out roast session, turning some of the Pacific Northwest's most majestic peaks into the sassiest ...