Tourists watch the melting ice sculpture of polar bear on the Trafalgar Square in London, Britain, December 12, 2009. The life-sized sculpture will slowly melt over its exhibition from December 11 until 20 to reveal a dramatic bronze skeleton, as a symbol of the threat of climate change and the plight of the Arctic in particular. [Xinhua]

A father and daughter watch the melting ice sculpture of polar bear on the Trafalgar Square in London, Britain, December 12, 2009. [Xinhua]