The 99% Invisible City

The urban environment is replete with inconspicuous design choices, stories, and secrets. Roman Mars has spent a decade exploring them on his wildly popular podcast "99% Invisible," and he has now released a book guide to as many as can fit into 375 pages. We find out why Mars once thought he was "unsuitable for public radio," and we hear some of his favorite stories, including why he loves stairs to nowhere that are "useless, but maintained." Guest: Roman Mars, host and creator of "99% Invisible" podcast and co-author of "The 99% Invisible City: A Field Guide to the Hidden World of Everyday Design"