The warning wasn’t a surprise. The International Energy Agency says carbon dioxide emissions from energy use are rising rapidly -- too much to limit the increase in average global temperature to two degrees Celsius. That’s a commonly cited benchmark to prevent the worst impacts of climate change. The I.E.A. urged governments to swiftly pass energy policies that would keep climate goals without harming economic growth. Some say political will is shifting as we recognize the impact of climate change in storm surges, heat waves, and drought. But others argue the cure for reducing carbon dioxide emissions will do more harm than good. Diane and her guests discuss the economic impact of climate change policy.