Andrew Vincent Alder, Senior Fellow, Institute for Environmental Security\n\nHolmes Hummel, Lecturer, Climate Policy, University of California, Berkeley \n\nTom Spencer, Vice Chair, The Institute for Climate Security\n\nGreg Dalton, Vice President, The Commonwealth Club, Moderator \n\n\nWhat is the geopolitical context in which the \u201cCarbon Quad\u201d \u2013 The United States, European Union, China and India \u2013 \nare posturing regarding a global deal to reduce carbon pollution? What is the potential impact of the dwindling snow pack in the Tibetan plateau? \nHow does water stress factor into the climate equation internationally and in California? A fast and furious roundtable explores these issues and \ntouches on the lessons of the European Union Emission Trading Scheme, which is something of a model for the United States. \n\nLearn more about your ad choices. Visit megaphone.fm/adchoices