Environmental-friendly features highlight Copenhagen summit
時(shí)間:2009-12-09 14:28 來(lái)源：SRC-174
A giant model of the earth is illuminated by electricity generated by people's riding bicycles in front of the city hall of Copenhagen, Denmark, Dec. 7, 2009, on the occasion of the United Nations Climate Change Conference (COP15). (Xinhua/Lin Miao)
