ClimateWire: Oregon regulators are studying how to design an economywide carbon cap-and-trade system that would be able to link with other similar programs in neighboring states and provinces. While a bill to actually implement a cap-and-trade system eluded state lawmakers in the legislative session that ended in March, they did direct the state Department of Environmental Quality to study "a market-based approach to controlling greenhouse gas emissions." DEQ staff are beginning the study now and said Friday...