After leaders' rhetoric, climate negotiators start work on deal

By Barbara Lewis and Bate Felix PARIS (Reuters) - With encouragement from 150 world leaders ringing in their ears, government negotiators in Paris sought on Tuesday to turn that rhetoric of unity into the text of a global deal to slow climate change. The biggest obstacle is money: how to come up with the billions of dollars developing nations need to shift from fossil fuels and adapt to the impacts of climate change. China's delegate Su Wei "noted with concern" what he called a lack of commitmen