Removing CO2 from the atmosphere involve some radical techniques, including growing crops to be burned in power stations, large-scale tree plantations, adding biochar to soil, adding nutrients to sea water to boost plankton and seaweed, and using chemicals to extract CO2 from the atmosphere. But Dr Phil Williamson, an environmental scientist at the University of East Anglia, claims that most, if not all, of these methods pose environmental risks and that much more research is needed before the wheels are set in motion on global-scale "climate geoengineering' schemes. http://www.sciencedaily.com/releases/2016/02/160210134823.htm
