Associated Press: China and other emerging economies don’t contribute to reining in greenhouse gases, "it would be very difficult" to get a new global climate deal through the U.S. Senate, even under a Democratic president, Sen. John Kerry said Monday. "At some point in time, they will have to take on those reductions, for several reasons, most importantly the developed countries are not going to be able to do this on their own," Kerry said in an interview. The Massachusetts …