New York Times: Some critics of the Environmental Protection Agencys new requirements for power plants argue that forcing emissions reduction will curtail economic growth. But the recent experience of states that already cap carbon emissions reveals that emissions and economic growth are no longer tightly tied together. One of the ways that states will be able to meet the new E.P.A. standards is by joining a Northeastern cap-and-trade program known as the Regional Greenhouse Gas Initiative, which first put in...