Agence France-Presse: China may pledge to improve its energy efficiency by a wide margin in the post-Kyoto years rather than commit to direct cuts in greenhouse gas emissions, state media said Friday. This will be the energy-guzzling Asian giant’s main contribution to world efforts to curb greenhouse gases from 2013 to 2020 under a new pact currently being negotiated to replace the Kyoto Protocol, the China Daily reported. “China will probably promise to achieve the same energy-saving target as it …