An excavator loads a truck with oil sands at the Suncor mine near the town of Fort McMurray in Alberta, Canada in 2009. Environmental groups that oppose oil sands mining have pointed to delayed and canceled projects as a sign of recent success. Mark Ralston/AFP/Getty Images hide caption

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Environmentalists Push To Keep Canadian Crude In The Ground

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By the 1960s, humpback whales and other whale species had been hunted extensively, sometimes to the point of near extinction. Then a recording of humpback whale songs helped shift public opinion on the hunting of all whale species. Luis Robayo/AFP/Getty Images hide caption

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Recordings That Made Waves: The Songs That Saved The Whales

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Greenpeace activists stand next to massive cloth letters next to the hummingbird geoglyph at Peru's sacred Nazca lines. The Peruvian government is pursuing criminal charges against the activists. Rodrigo Abd/AP hide caption

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In St. Petersburg on Thursday, Greenpeace International activist Anthony Perrett, a British citizen, showed the Russian transit visa that's now in his passport. Olga Maltseva/AFP/Getty Images hide caption

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A truck carrying hardwood timber drives along a rural road leading to Paragominas, Brazil, on Sept. 23, 2011. The city has become a pioneering "Green City," a model of sustainability with a new economic approach that has seen illegal deforestation virtually halted. Andre Penner/AP hide caption

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