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.
Pulitzer Prize winning writer Robert Massie talks about World War I and the critical importance of the war at sea between Great Britain and Germany.
- Robert Massie Author, "Castles of Steel" (Random House). He won a Pulitzer Prize for his book "Peter the Great: His Life and World."
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