General view of the delegates attending the opening session of the UN Conference on Climatic Changes in Nairobi Nov. 6, 2006. Environmentalists and officials from around the world opened a UN climate change conference with appeals for urgent action to curb global warming that threatens billions of people on the planet.  (Xinhua/AFP Photo) Photo Gallery >>>

Photo taken on Nov. 6, 2006 shows the opening session of the UN Conference on Climatic Changes in Nairobi Nov. 6, 2006.(Xinhua/AFP Photo) Photo Gallery >>>