The various strategies we usually hear about for addressing our warming globe involve switching from fossil fuels to solar and wind. But the carbon already present will stay for hundreds of years. We need to remove it as well. Fossil fuel supporters have long promoted carbon capture and storage, but it has remained prohibitively unprofitable. Carbon utilization technologies, such as fixation by algae or conversion to industrial chemicals, are a new focus, exemplified by the FUEL Act now before Congress, supported by the Carbon Utilization Research Council, which is made up primarily of coal interests. A March, 2015 review in the Journal of CO2 Utilization concluded that global warming can be reduced by these technologies but substantial problems of cost-effectiveness and the fact that many cause other environmental impacts must be overcome. (“Carbon capture, storage and utilisation technologies: A critical analysis and comparison of their life cycle environmental impacts”, Cuéllar-Franca, Azapagicas). However, as Dr. William Moomaw of Tufts’ Fletcher School points out, we already have an extremely effective device for carbon sequestration: the tree.