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POPOCATÉPETL VOLCANO, Mexico — 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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Marco Calo, left, a geophysicist at the National Autonomous University of Mexico (UNAM), take a break on the slopes of the ...

What's Inside Mexico's Popocatépetl? Scientists Obtain First 3D Images of the Whole Volcano POPOCATÉPETL VOLCANO, Mexico (AP) — In the predawn darkness, a team of scientists climbs the slope of Mexico ...

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 ...

POPOCATÉPETL VOLCANO, Mexico — 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 ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. POPOCATÉPETL VOLCANO, Mexico (AP) — In the ...