11/29/2015: The Last Prisoner, The Execution of Joseph Wood, Taking on the Eiger

Alan Gross tells correspondent Scott Pelley about his five years as a prisoner in Cuba and his activities that led up to his arrest in his first interview. Correspondent Bill Whitaker examines the execution of Joseph Wood, who died by lethal injection after nearly two hours, and the drugs being used in the procedure. And correspondent Anderson Cooper visits the Eiger of the Swiss Alps to witness a new breed of daredevil, plunging down mountains instead of climbing them.