The Chaparrastique volcano in eastern El Salvador erupted on Sunday. Hector Garay/Telenoticias 21/AFP/Getty Images hide caption

itoggle caption Hector Garay/Telenoticias 21/AFP/Getty Images

At the official rate, 1 U.S. dollar is worth 6.3 Venezuelan bolivars. But in a country with runaway inflation, the black market rate is about 60 bolivars to the dollar. This has made airfares extremely cheap for those using currency acquired on the black market. Juan Barreto/AFP/Getty Images hide caption

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Dominicans of Haitian descent protest outside the Constitutional Court in Santo Domingo, Dominican Republic, on Oct 3. Manuel Diaz/AP hide caption

itoggle caption Manuel Diaz/AP

Volunteers look through children's letters to Santa at a post office in Salvador in northeastern Brazil's Bahia state. The campaign is part of a more than 20-year tradition to help those less fortunate to have gifts for the holiday. Raul Spinasse/DPA /Landov hide caption

itoggle caption Raul Spinasse/DPA /Landov

An auto worker tightens bolts on a Focus at a Ford plant in Michigan in October. Labor unions predicted in 1993 that NAFTA would send many U.S. manufacturing jobs to Mexico, and they continue to argue that the pact prompted a race to the bottom for workers. Mira Oberman/AFP/Getty Images hide caption

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Edward Snowden, seen during a video interview with The Guardian. Glenn Greenwald/Laura Poitras /EPA/LANDOV hide caption

itoggle caption Glenn Greenwald/Laura Poitras /EPA/LANDOV

Presidential candidate Michelle Bachelet waves during a victory rally in Santiago, Chile, on Sunday. She defeated her conservative rival Evelyn Matthei with 62 percent of the vote. Luis Hidalgo/AP hide caption

itoggle caption Luis Hidalgo/AP