California is taking a closely watched step to cut greenhouse gas emissions through a new cap-and-trade program. On Wednesday, the state will open a carbon market that forces its biggest polluters to buy and sell permits to emit carbon dioxide. Some say cap-and-trade here could become either a model or a cautionary tale for others.
Craig Miller, science editor for KQED who hosted and co-reported the documentary, "Heat and Harvest"
Severin Borenstein, professor at UC Berkeley's Haas School of Business and co-director of The Energy Institute at Haas
Jasmin Ansar, economist with the climate program at the Union of Concerned Scientists
Shelly Sullivan, executive director of the AB 32 Implementation Group