Francisco Carlos Fonseca is the manager of Marina Confiança, a resort located on the banks of the Cantareira reservoir system. Behind him is a boat ramp that once led to a lake that he says used to be more than 100 feet deep. Kainaz Amaria/NPR hide caption

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An impala strikes a pose under a forest canopy in Zimbabwe. Morkel Erasmus/Getty Images/Gallo Images hide caption

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A man and his drone: Carlos Casteneda of the Amazon Basin Conservation Association prepares to launch one of his plastic foam planes. Jason Beaubien/NPR hide caption

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A baby orangutan wearing a diaper swings through the trees at the Sumatran Orangutan Conservation Program outside Medan, capital of Indonesia's North Sumatra province. The program takes mostly orphaned orangutans, nurses them back to health and releases them back into the wild. Anthony Kuhn/NPR hide caption

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Doughnuts at a Krispy Kreme store in Washington, D.C. An environmental coalition says leading doughnut companies like Krispy Kreme source palm oil from suppliers who are clear-cutting rain forests and destroying wildlife habitat. Meredith Rizzo/NPR 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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Should our growing understanding of pre-Columbian settlements in the Amazon have any bearing on the debate over the region's development today? Antonio Scorza/AFP/Getty Images hide caption

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