A worker plants seedlings for reforestation at Huayquecha Biological Station near Paucartambo, Cusco December 5, 2014. Locals farming in areas of the Peruvian rainforest commonly burn fields to improve soil quality, which create carbon dioxide emissions that may harm the environment. The seedlings will mature into trees, as part of environmentally-friendly reforestation programmes promoted by the Amazon Conservation Association (Asociacion para la Conservacion de la Cuenca Amazonica, ACCA). A two-week long U.N. Climate summit is taking place in Lima from December 1. Picture taken December 5. REUTERS/Enrique Castro-Mendivil (PERU - Tags: ENVIRONMENT AGRICULTURE SOCIETY)