Twenty-six of Beltrá’s photos of Indonesia, Greenland and the Antarctic have been included in the COAL + ICE exhibit in San Francisco co-curated by Susan Meiselas and Jeroen de Vries. COAL + ICE will be at the Fort Mason Center for Arts and Culture until September 23rd and features work by a total of 40 photographers on the consequences of fossil fuel usage on global warming. The three photos digitally displayed here are from his Greenland series; they show the impact of dark snow (airborne coal soot pollution) on the melting of the ice sheet west of Ilulissat in 2014. (Photo by Jamey Stillings)