Strategic protection, restoration, and improved land management activities could help achieve up to one third of the global greenhouse gas emissions reductions needed to stabilize the climate. To achieve the full potential of Natural Climate Solutions, we need tools grounded in science and data to inform decision-making. The NCS Activation Toolkit uses state-of-the art mapping, data collection, field-testing, and impact evaluation tools to accelerate the implementation of NCS across the globe and keep 1 billion metric tons of CO2 out of the atmosphere by 2030.