Top climate change officials from China and the U.S. met this week in Beijing to hash out a pre-Copenhagen plan for cutting greenhouse gas. The two countries are the world’s top two greenhouse gas emitters, according to the Brookings Institution. Together, they account for more than 40 percent of annual emissions. Any solution to the greenhouse gas problem may require both countries to transition to low-carbon economies.

Just back from a trip to China is Assistant Energy Secretary David Sandalow, who joins The Takeaway to discuss how talks are going. Click through for the full transcript of the interview.