We analyze the global budgets of carbon dioxide and methane. These studies include the balance of carbon coming from deforestation and land use change compared with fossil fuel emissions. We also study ways to encourage low carbon and low water technologies through carbon pricing and other levers. Lab member Rob Jackson directed the DOE National Institute for Climate Change Research for the southeastern U.S., co-chaired the U.S. Carbon Cycle Science Plan (2011), and is currently chair of the Global Carbon Project (www.globalcarbonproject.org).