As a producer, Alex was the driving force behind The Fix Is In (168), The Ghost of Bobby Dunbar (352) and Act V (218, with Jack Hitt). It was his obsession with mortgage-backed securities that led us to The Giant Pool of Money (355) and all the Planet Money shows that came after.
Producer Alex Blumberg conducts an investigation, perhaps the first ever, into this American subspecies: People who compulsively imitate their mother's voices in everyday conversation, well into adulthood.