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.
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.
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>
