Reuters: A decline in China’s energy intensity, or the amount of energy it uses to produce each unit of national income, picked up pace in the first half of 2009, the country’s top economic planner said on Sunday. The country used 3.35 percent less energy to generate each dollar of gross domestic product (GDP) in the six months through June 2009 than a year earlier, the National Development and Reform Commission said in a statement on its Website. This was a speedier fall than the 2.89 …