Reuters: Japan on Wednesday stepped up its plans to buy greenhouse gas emissions rights from Russia, to help Tokyo meet its emissions limits under the Kyoto Protocol on global warming. The U.N.-run Kyoto treaty allows industrialized countries to meet greenhouse gas targets between 2008 and 2012 by buying emissions rights from each other or from developing nations. Two such trading schemes force the buyer to fund emissions cuts in return for receiving the carbon offsets. A third, …