Popocatépetl emerged in the crater of other volcanoes in its current form more than 20,000 years ago and has been active since 1994, spewing plumes of smoke, gas and ash more or less daily. The ...
The Canadian Press on MSN
What's inside Mexico's Popocatépetl volcano? Scientists obtain first 3D images
In the predawn darkness, a team of scientists climbs the slope of Mexico's Popocatépetl volcano, one of the world’s most ...
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