Popocatepetl may be ready to blow
(NEWSER) - Officials are so uneasy about the rumblings of the now-glowing Popocatepetl volcano near Mexico City that they've shut down nearby schools, and warned travelers to stay away. Eight low-intensity "exhalations" and a 40-minute tremor from the shuddering volcano have been measured by Mexico's National Center for the Prevention of Disasters, reports CNN . The volcano threat has been raised to level 5 out of a possible 7, meaning there's a high probability of some kind of major activity, according to AP . More»