CNN: The greenhouse gas emissions of 40 industrialized nations that signed the Kyoto Protocol treaty in 1997 have collectively dropped by an average of 5 percent below 1990 levels, the UN reported on Monday. Many developed countries, including Germany, are still lagging behind their Kyoto Protocol treaty targets. However the 5 percent drop, which was the 2012 aim of the treaty signed in 1997, was attributed mainly to economic decline in central and eastern Europe in the early …