Popocatépetl volcano spews smoke and ash, putting millions of Mexicans on aler
Popocatépetl volcano erupts over Central Mexico: What we know
Volcanoes are erupting, spewing ash on these three continents
Mexico raises alert level as volcano ejects smoke, ash, lava
Threatening 22 million people, Mexico’s Popocatepetl is a very closely watched volcano
Threatening 22 million people, Mexico's Popocatepetl is a very closely watched volcano
Mexican volcano spews lava and gases