Abdullah bin Hamad Al-Attiyah (L), president of the 18th Conference of the Parties (COP18) to the United Nations Framework Convention on Climate Change (UNFCCC), and UNFCCC Executive Secretary Christiana Figueres hold a press conference after the opening of Qatar Sustainability Expo at the Doha Exhibition Center (DEC) in Doha, Nov. 26, 2012. Qatar Sustainability Expo, a demonstration of various environmentally-friendly technology projects from Qatar and abroad, opened at the DEC on Monday. [Xinhua]

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