Guardian: The world is heating up under the pressure of rising greenhouse gas emissions, and the consequences will be dire: an increase in extreme weather, droughts, floods, a loss of agricultural productivity, people living precarious lives pushed closer to the brink. But it does not have to be so. Halting the rise of carbon emissions is possible not only possible, but achievable at a modest cost that will be more than outweighed by the manifest benefits. We spend a little more now, to recoup in the next...