Peter Lehner,executive director of the Natural Resources Defense Council, also teaches environmental law at Columbia University Law School. Chief of the Environmental Protection Bureau of the New York State Attorney General’s office for eight years, he created and led New York City’s environmental prosecution unit. Bob Deans,author of the 2007 bookThe River Where America Began: A Journey Along the James,was the chief Asia correspondent for theAtlanta Journal-Constitutionand other Cox newspapers, and for eight years covered the White House.