A man walks past the banners of the United Nations Climate Change Conference (COP-16) in Cancun, Mexico, Nov. 29, 2010. The talks, from Nov. 29 to Dec. 10, are held to continue to search solutions to the climate problem. [Xinhua]

Activists calling for saving the planet hold a rally outside the venue of the United Nations Climate Change Conference (COP-16) in Cancun, Mexico, Nov. 29, 2010. The talks, from Nov. 29 to Dec. 10, are held to continue to search solutions to the climate problem. [Xinhua]