Qatari Emir Sheikh Hamad Bin Khalifa Al-Thani speaks during the opening session of the high-level segment of the United Nations Climate Change Conference in Doha, Qatar, on Dec. 4, 2012. (Xinhua/Li Muzi)
UN Framework Convention on Climate Change (UNFCCC) Executive Secretary Christiana Figueres speaks during the opening session of the high-level segment of the United Nations Climate Change Conference in Doha, Qatar, on Dec. 4, 2012. (Xinhua/Li Muzi)
Abdullah Bin Hamad Al Attiyah, president of the 18th Conference of the Parties (COP18) to the United Nations Framework Convention on Climate Change (UNFCCC), speaks during the opening session of the high-level segment of the United Nations Climate Change Conference in Doha, Qatar, on Dec. 4, 2012. (Xinhua/Li Muzi)
United Nations Secretary-General Ban Ki-moon speaks during the opening session of the high-level segment of the United Nations Climate Change Conference in Doha, Qatar, on Dec. 4, 2012. (Xinhua/Li Muzi)
United Nations Secretary-General Ban Ki-moon speaks during the opening session of the high-level segment of the United Nations Climate Change Conference in Doha, Qatar, on Dec. 4, 2012. (Xinhua/Li MuziUnited Nations Secretary-General Ban Ki-moon addressed the opening session of the high-level segment of the United Nations Climate Change Conference in Doha, Qatar, on Dec. 4, 2012.