When this volcano eventually blows, it won't be lava flows or choking clouds of ash that threaten surrounding cities, but lahars: violent, fast-moving mudflows that can tear across entire ...

Lava began erupting slowly in the summit crater of Great Sitkin Volcano this week and small earthquakes were detected over the past day. Mount Spurr, located in the Tordrillo Mountains about 80 ...

Dr. Bouzat and Mr. Cañas-Valle at first hypothesized that harsh environmental conditions along the Chimborazo volcano where they found the nests had forced the birds together. The birds live more ...