Arizona Republic: Arizona will no longer participate in a groundbreaking attempt to limit greenhouse-gas emissions across the West, a change in policy by Gov. Jan Brewer that will include a review of all the state’s efforts to combat climate change. Brewer stopped short of pulling Arizona out of the multistate coalition that plans to regulate greenhouse gases starting in 2012. But she made it clear in an executive order that Arizona will not endorse the emission-control plan or any program that could …