San Francisco Chronicle: As international diplomats gather in Bali to try to begin negotiating a successor treaty to the Kyoto Protocol, their toughest challenge is how to deal with China’s fast rise as the world’s leading source of greenhouse gases. At the talks, which began Dec. 3 and continue until Dec. 14, no binding agreement is likely to be reached on cutting emissions. The Bush administration refuses to consider such a pact unless China also does so and China says wealthy nations must go first. Not …