Topic: Mount St. Helens - CSMonitor.com

Odd meteorite could be time capsule of a wetter Mars

Scientists have analyzed a meteorite found on Earth and suggest that it could come from Mars's crust at a time when the planet was still wet and volcanically active.

Landsat program marks 40 years of photographing Earth from space (+video)

Crystals found in magma chambers may help scientists predict volcanic eruptions

Mexico's 'smoking mountain' lives up to its name (+video)

Japan tsunami a wake-up call for US west coast

Mount St. Helens: 30 years later -- what a comeback!

Mt. St. Helens and the Cascade Volcanic Arc: Iceland in America

30 years later, visitors remember Mount St. Helens eruption

Five biggest volcano eruptions in recent history

Researchers puzzle over how long Iceland volcano will erupt

Gallery Pardon the eruption: Volcanoes around the world

When Mt. Redoubt erupts, these scientists are on the job

Which is the bigger polluter – humans or volcanoes?

USGS: Eruption risk from Alaska volcano rising

Dad's museum mania