Peter Wallsten, a veteran newspaper journalist and head of investigative reporting at The Washington Post, talks to host Ben Shaberman about his evolving career as a reporter and editor and the impact that Stargardt disease has had on his journey and ambitions. Peter also reflects on recently receiving a Pulitzer Prize for his team's 15-part series on the role of the AR-15 assault rifle in mass shootings and how the weapon has become one of the best-selling firearms in the US.