On April 20, 2010 the U.S. faced the worst accidental oil spill—and by some assessments—environmental disaster in the history of the country. The Transocean Deepwater Horizon rig, 41 miles off the coast of Louisiana, blew up, killing 11 and leaking millions of gallons of oil into the Gulf of Mexico.

As the National Commission on the BP Deepwater Horizon Oil Spill and Offshoring Drilling wraps up its investigative report, Commission member Cherry A. Murray will offer a rare insider’s look on carrying out President Obama’s charge to “follow the facts wherever they led.” Rich Sears, who served as the Senior Science and Engineering Advisor on the Commission and is a former VP of Deepwater Services at Royal Dutch Shell, will then give a primer on such wells are drilled and explore the what and why of the blowout that doomed the Deepwater Horizon. Murray will conclude with a summary of the recommendations given by the Commission to the U.S. Congress and the oil/gas industries. Both will answer questions about the lessons learned from the accident and suggest ways to move forward.