Participating in CIGI's conference "The New Geometry of Global Summitry: The Future of the G20 (and the G8)", Adil Najam answers the questions: 1. Does the UN climate change process need help? 2. Who should "steer" climate change issues? 3. Can the G20 catalyze the international environmental institutional architecture? 4. What issues belong on the agenda and what do not? 5. Should the G20 get involved in trade and development issues? 6. Should trade ministers emulate what the finance ministers have done? Adil Najam is Professor and Director at the Pardee Center, Boston University.