E&E: Scientists are taking a hard look at tweaking the planet's thermostat with geoengineering methods, which were once a taboo avenue for research, as a way to stave off some of the worst-case scenarios for the warming Earth.
Earlier this week, the National Research Council convened a committee to review approaches that could cool the world, with the goal of creating a scientific foundation that could help resolve political, ethical and legal issues surrounding these controversial techniques. Geoengineering...