Reuters: Japan can cut greenhouse gas emissions by 11 percent by 2020 below 2005 levels, a trade ministry study said on Wednesday, far below efforts proposed by U.N. officials and the European Union. Japan could achieve the cuts through an overhaul of energy supply including installing solar panels on 70 percent of new homes and a jump in nuclear power-generated electricity to 45 percent of supply from 30 percent currently, as well as a 15 percent improvement in auto fuel …