Spanning over 100,000 square miles off the coast of Australia, the Great Barrier Reef is one of the Seven Natural Wonders of the World, providing a home to thousands of marine species, sequestering millions of tons of carbon, and creating 64,000 jobs and 56 billion dollars in economic value. But it’s under threat, from climate change, coastal development, and a coral-eating starfish whose population is out of control. Today, we discuss why the Great Barrier Reef is important, what challenges it faces, and what we can do about them. With special guest Dr. Michael Kingsford: Distinguished Professor of Marine Biology at James Cook University in Queensland, Australia.