Roman Mars, the founder of Radiotopia and host of the hit podcast 99 Percent Invisible, talks with Recode's Peter Kafka about the state of podcasting in 2018. Mars talks about why he started Radiotopia, how it works within the nonprofit PRX and how it thinks about translating its audio shows into live productions. He also explains why the podcasting industry isn't ready to be divvied up into paid subscription services, a la Hulu and Netflix, even though some of its biggest players are beginning to experiment along those lines. Plus: Why 99 Percent Invisible, a show about design, also tackles seemingly eccentric concepts, like how doctors give bad news to their patients.