World leaders launch bid for climate breakthrough in Paris

By Bruce Wallace and Alister Doyle PARIS (Reuters) - World leaders launched an ambitious attempt on Monday to hold back the earth's rising temperatures, with French President Francois Hollande saying the world was at a "breaking point" in the fight against global warming. Some 150 heads of state, including U.S. President Barack Obama and his Chinese counterpart Xi Jinping, will urge each other to find common cause in two weeks of bargaining to steer the global economy away from its dependence on