An Earth Day special that coincides with the two-year anniversary of the April 20 Deepwater Horizon oil spill, the worst in U.S. History. What became of all that oil? And what's the future of offshore drilling? Segments will include a profile of the work of social scientist Dr. Steven Picou from the University of South Alabama who has been listening to the human stories of those hardest hit in the aftermath of the Deepwater Horizon oil spill: fisherman and charter boat captains and business owners. Picou first developed what he calls "peer listening training" after the Exxon Valdez oil spill in Alaska, only to see a similar fate befall his own Gulf Coast home. And Alex Chadwick will tell the story of a very rich oil field that lay overlooked for decades in central Utah, and was then essentially given away by Chevron. It has produced about a billion dollars of high-grade oil since its discovery eight years ago.