World leaders are meeting in New York on Tuesday for the UN Climate Summit. Forum will discuss different approaches to combating climate change including severe reductions in energy consumption, technological solutions, and ramping up renewable energy production. Where does the world stand in the fight against climate change, and what should be done next?
Michael Shellenberger, president of the Breakthrough Institute, an energy and innovation think-tank
Victor Menotti, director of the International Forum on Globalization
John Upton, senior science writer for Climate Central