Bloomberg: Global-warming talks later this month are the “last chance” for countries to reach an agreement on cutting emissions of gases blamed for rising temperatures, India’s environment minister said today. “The credibility of the entire climate change negotiating system is at stake,” Jairam Ramesh told reporters at a meeting in Delhi. “If we do not get a set of operational and meaningful decisions at Cancun everybody will be sick and tired of us.” Nations will attempt to forge a deal on curbing greenhouse…