Brian has asked you, the listeners, and dozens of guests: is war inevitable? Now he gathers the crowd to ask: how do we achieve peace? Watch Brian, author John Horgan, U.S. Congressman Dennis Kucinich, and a panel of refugees, peace builders and veterans of war.

Also, Alex Blumberg and Adam Davidson, the team behind NPR and This American Life’s Planet Money project, explain the European debt crisis. They break down how we got to this point, what’s next, and make sure that you can explain the EU troubles to your friends at your next dinner party.