The Tungurahua volcano spews ash and rocks during an eruption in Banos, Ecuador, in June 2010. Tungurahua has been classed as active since 1999 and had a strong eruption in 2008. It is one of eight active volcanoes in the country.
Japan’s earthquake and tsunami is alerting the US west coast that the same kind of thing could happen there. Experts who study the earth’s shifting crust say the “big one” may be past due.
The story of how plants and animals on Mount St. Helens have rebounded after its cataclysmic eruption 30 years ago shows how ecosystems respond to major disturbances.
Mt. St. Helens erupted 30 years ago. With an Icelandic volcano causing global problems today, the Mt. St. Helens anniversary is a reminder of volcanic activity in America's Lower 48 states.
Tuesday marks the 30th anniversary of the eruption of Mount St. Helens