World leaders to launch bid for climate breakthrough in Paris

By Bruce Wallace PARIS (Reuters) - World leaders will launch an ambitious attempt on Monday to hold back the earth's rising temperatures, urging each other to find common cause in two weeks of bargaining meant to steer the global economy away from dependence on fossil fuels. After decades of struggling negotiations marked by the failure of a previous summit in Copenhagen six years ago, some form of landmark agreement appears all but assured by mid-December. Warnings from climate scientists, dema