| Former president of Colombia Andres Pastrana, Sydney mayor Clover Moore, Sao Paulo mayor Gilberto Kassab, Heidelberg mayor Eckart Wurzner, and Hong Kong's Secretary for the Environment Edward Yau (from L to R) attend the Fourth Global Climate Summit of the 40 major cities, in the city of Sao Paulo, Brazil on June 2, 2011. The mayors of 40 major world cities and other personalities gather to share their experiences in environmental policy and provide solutions to address climate change. The event is held for the first time in South America. (Xinhua/Ayrton Vignola/Agencia Estado) |
