Energy, environment ministers from 20 countries renew climate change talks in Mexico

Representatives from 20 of the world's most polluting nations met behind closed doors in this industrial city in northern Mexico on Tuesday to discuss ways to combat global warming.

Officials said energy and environment ministers from G-8 nations as well as developing countries such as China, India and Brazil considered how to create a new framework for tackling climate change before the Kyoto Protocol expires in 2012.