What in the world is coral bleaching? Where in the world is it happening? And how the world are starfish involved? Join Guy Raz and Mindy Thomas on an underwater adventure to Australia's Great Barrier Reef as they set out to explore the Who, What, When, Where, Why, How and Wow in the World of coral bleaching!See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.