United Nations Reveals List of Leaders Attending Upcoming Climate Summit

The United Nations Secretary-General's daylong Climate Summit in New York on Sept. 23 will draw about 120 heads of state, and many lower-ranking officials, according to a list of speakers the U.N. released this week. President Barack Obama will attend on behalf of the U.S., but China and India — the first and third-largest emitters of carbon dioxide — will be represented by lower-level officials. Carbon dioxide, the main long-lived greenhouse gas that is causing global warming, stayed at or ...