“We were being poisoned by our own exhalation.” Carbon dioxide threatens to kill the crew. Mission control must improvise as the most fragile system of all is under threat: the astronauts themselves. #13MinutestotheMoon For a film about how the crew made the makeshift CO2 adaptors: www.bbcworldservice.com/13minutes Presented by Kevin Fong. Archive: Nasa Starring: Jim Lovell Merlin Merritt Anthony England Ed Smylie, courtesy of the Johnson Space Center Oral History Project Fred Haise Marilyn Lovell Ken Mattingly Charles A Berry Joe Kerwin Gerry Griffin Written by Kevin Fong and Chris Browning