E.P.A. Cancels Talk on Climate Change by Agency Scientists Tom Borden, the program director of the Narragansett Bay Estuary Program, said he received a call on Friday from Wayne Munns, director of the Atlantic ecology division of the E. P.A.’s Environmental Effects Research Laboratory, telling him the three scientists would not be allowed to speak. WASHINGTON — The Environmental Protection Agency has canceled the speaking appearance of three agency scientists who were scheduled to discuss climate change at a conference on Monday in Rhode Island, according to the agency and several people involved.