Popocatépetl, Mexico
The activity at Popocatépetl isn't exactly headline grabbing: steam-and-ash plumes with maybe some very minimal ash deposits. Par for the course for the Mexican volcano. I included Popo just to remind people about the threat the volcano poses to Mexico City and its outlying communities.
Image: A January 4, 2011 image of a diffuse steam-and-ash plume from Popocatépetl in Mexico. Image courtesy of the NASA Earth Observatory.
Backlink: http://www.wired.com/wiredscience/wp-content/gallery/vulcans-view-4/popocateptl_ali_2011004.jpg
