Reuters: The United Nations hopes to include a market-based scheme aimed at using carbon credits to save rainforests as part of a broader pact to fight climate change. Called REDD, or reduced emissions from deforestation and degradation, the scheme won backing at last year’s U.N.-led climate talks in Bali and trial schemes are now being developed, a number of them in Asia. The idea is to refine the pay-and-preserve scheme for inclusion into the Kyoto Protocol’s successor from …