In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world's most active and whose eruption could affect millions of people. Its mission: figure ...

Mexico’s Popocatépetl volcano has long drawn attention for its size, constant activity, and glowing plumes of smoke and ash, ...

Scientists from Mexico’s National Autonomous University have created the first three-dimensional image of the Popocatépetl volcano's interior POPOCATÉPETL VOLCANO, Mexico -- In the predawn darkness, a ...

Most of the world’s volcanoes that pose a risk to humans already have detailed maps of their interiors, but not Popocatépetl ...

Months of relationship-building between Mexico City reporter María Verza and scientists at the National Autonomous University’s Geophysics Institute ...

Mexico Volcano Marco Calo, left, a geophysicist at the National Autonomous University of Mexico (UNAM), take a break on the slopes of the Popocatepetl volcano in ...

POPOCATÉPETL VOLCANO, Mexico (AP) — In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world’s most active and whose eruption could affect ...

POPOCATÉPETL VOLCANO, Mexico (AP) — In the predawn darkness, a team of scientists climbs the slope of Mexico’s Popocatépetl volcano, one of the world’s most active and whose eruption could affect ...

POPOCATÉPETL VOLCANO, Mexico (AP) — In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world’s most active and whose eruption could affect ...