Mother Jones: In a year of record-setting heat on a blistered globe, with fast-warming oceans, fast-melting ice caps, and fast-rising sea levels, ratification of the December 2015 Paris climate summit agreement--already endorsed by most nations--should be a complete no-brainer. That it isn't tells you a great deal about our world. Global geopolitics and the possible rightward lurch of many countries (including a potential deal-breaking election in the United States that could put a climate denier in the White...