Forestry activities account for over 17 percent of human-caused greenhouse gas emissions. Since 2005, parties to the United Nations Framework Convention on Climate Change have been negotiating a mechanism known as REDD—Reducing Emissions from Deforestation and Degradation—to provide an incentive for developing countries to reduce carbon emissions and limit deforestation at the same time. When REDD was first proposed, many commentators argued this mechanism would not only miti