Add Yahoo as a preferred source to see more of our stories on Google. Authorities have raised the alert level after ash spewed from the Popocatépetl volcano in central Mexico. It's one of the most ...

After more than four decades of silence, a long-dormant volcano is showing unsettling new signs of activity that have scientists watching closely. Researchers have detected rising temperatures, ...

Authorities have raised the alert level after ash spewed from the Popocatépetl volcano in central Mexico. It's one of the most active volcanoes in the country.