Salon: A new two-year study by the Investigative Reporting Workshop at American University demonstrates how the Koch brothers have helped to derail climate change legislation. The conservative group Americans for Prosperity, which the Kochs bankroll, pushed lawmakers to sign a pledge not to vote for legislation relating to climate change that includes a net increase in government revenue. From the study: [I]n 2011 and 2012, Koch Industries Public Sector LLC, the lobbying arm of Koch Industries, advocated...