Telegraph: Negotiators should ditch hopes of enforcable targets on emmissions reductions and push instead for a voluntary framework at the upcoming Cancun summit, the former deputy prime minister said. After President Barack Obama’s ”shellacking” at the hands of Republican opponents in mid-term elections, there was no prospect of the US Congress approving legal requirements to cut greenhouse gas emissions, said Lord Prescott, who was a key UK negotiator at the Kyoto global warming conference in 1997. …