In late 2009, President Barack Obama and his Chinese counterpart Hu Jintao announced an ambitious array of joint clean energy research projects touted as a mark of a maturing relationship and an alliance to fight climate change. A year after Obama's visit to China, the envisioned partnership has largely evaporated. The U.S. has filed a complaint at the World Trade Organization against China's policies favoring its producers of wind and solar equipment. Cooperation in climate change talks has been rare. Read More