
Popocatepetl in eruption, July 2013. Photo courtesy Science Times. http://www.isciencetimes.com/articles/5617/20130712/popocatepetl-volcano-erupts-mexico-city-ash.htm
Popocatepetl in eruption, July 2013. Photo courtesy Science Times. http://www.isciencetimes.com/articles/5617/20130712/popocatepetl-volcano-erupts-mexico-city-ash.htm
Satellite photo of Niuafo’ou Volcano. Google Maps screen capture
Initial plume from Bogoslof on Dec. 20, 2016. Photo courtesy AVO via NYT. http://www.nytimes.com/2016/12/30/science/an-alaskan-volcano-bogoslof-erupts-largely-out-of-view.html?ref=oembed&_r=0