Stuck On Stamps: What Fuels The Philatelists?

First up, Edgar talks with Joan Donovan and Steven Rai, a colleague from her Critical Internet Studies Institute, about the extremist ecosystem online that radicalized the shooters in Monday’s attack on a mosque in San Diego. Then, Could 3D printed houses create a more affordable world of the future? We meet & talk with AJ Perez, a research scientist at MIT’s Office of Innovation.Lastly, Edgar meets former Smithsonian Collections Specialist Alex Haimann to talk stamps & stamp collecting during the ongoing Boston 2026 World Expo.