Media General News Service: Global warming fears have led to the cancellation or indefinite delay of dozens of proposed coal plants in recent months in almost every corner of the country because of the fuels commonly used to run power plants, none releases more carbon than coal. But with a few notable exceptions, the debate over coal’s role in global warming has had much less of an impact in the Southeast, which is more dependent on coal than much of the rest of the country and where some state regulators remain …