Learn how ash from volcanic eruptions can alter ice content in clouds, influencing how Earth handles radiation.

An explosion on Mount Spurr could generate massive cloud of ash, which could mess with airplanes and cause issues for humans.

The Japan Meteorological Agency plans to issue ashfall warnings and advisories in the event of an eruption on any of the ...

It was 45 years ago today when Mount St. Helens erupted, triggering the biggest landslide in Earth’s recorded history and creating an ash cloud that reached across the country. John Yang looks back at ...

Indonesia's Centre for Volcanology and Geological Disaster Mitigation has elevated the alert status of Mount Lewotobi in East ...