Guardian: The fight against global warming will only work if big developing countries took on legally binding targets, Canada’s environment minister said on Wednesday, underlining a major split at climate talks in Bali. About 190 nations are meeting in a luxury Indonesian beach resort from Dec. 3-14 to try to launch two-year negotiations on a new global climate change deal to replace or extend the Kyoto Protocol from 2013. "If we want to take a voluntary approach for 70 percent of …