Coral reefs are the largest biological structures on the planet and have a major impact on our lives. In the face of climate change, pollution and over-fishing, can coral reefs be saved? Our guest is Juli Berwald, author of LIFE ON THE ROCKS: BUILDING A FUTURE FOR CORAL REEFS. Juli Berwald received her PhD in ocean science from the University of Southern California, and has written The New York Times, Nature, National Geographic, and Slate.