National Public Radio: President Obama sent two of his Cabinet secretaries to China this week to deal with the question of global warming. Both of them are of Chinese descent. That sent a ripple of interest through China’s officialdom. The cabinet secretaries’ mission was to make a case that China and the United States — the world’s largest emitters of carbon — must cooperate for any deal to be struck at the United Nations climate change talks in Copenhagen this December. One of the first …