Turning the Tide

Sigourney Weaver and Lisa Suatoni, senior scientist for the Natural Resources Defense Council, talk about the troubling rise in ocean acidity and a new film they’ve produced on the subject. Then, historian Eugene Rogan takes us through the last five centuries of Arab History—from the Ottoman Empire to today. Also, photographer Ethan Russell tells us what it was like to be on the Rolling Stones' 1969 "Let it Bleed" tour. Plus, our latest Underreported segments.