A new report says traffic in the U.S. is worse than it's been in years. But some say there are reasons to be optimistic. For this month's Environmental Outlook: How revitalized urban centers and new modes of transportation are changing how we get around our cities.
What does the D.C. public service commission's rejection of the Pepco-Exelon merger mean? Is this a victory for renewable energy advocates? What are the prospects for turning Pepco into a public power utility?
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