What happens to the body in the deep sea? You need oxygen to survive, but too much oxygen can be deadly. Also, if you rise to the surface too quickly, nitrogen bubbles can form in your body and kill you. We'll talk with author and scientist Rachel Lance, who has conducted research for the military, using a hyperbaric chamber in which the air and the pressure can be controlled to mimic what divers and submarines are exposed to. Her new book is about the scientists whose dangerous experiments about underwater pressure and injury were critical to the success of D-Day. It's called Chamber Divers. David Bianculli reviews the new series Franklin, starring Michael Douglas as Ben Franklin. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy