San Francisco Chronicle: A sweeping plan to carry out California’s landmark law to fight global warming, made public Thursday by the state’s air board, addresses a problem that planning groups say has been overlooked in most federal legislation: suburban sprawl. The draft plan, which seeks to cut greenhouse gas emissions in the state by 30 percent by 2020, encourages local governments to create land-use and transportation plans that help them meet reduction targets. The idea is to discourage driving by …