
Revisiting The 99% Invisible City
9 September - 41 minsWe’re excited to celebrate the 5th anniversary of The 99% Invisible City, a NYT Bestseller by Roman Mars and Kurt Kohlstedt, with a guided audio tour of beautiful downtown Oakland, California. Join us as we explore different everyday designs, using examples from the built environment around our old offices as jumping-off points.
And if you don't already have one: be sure to get your print or audio copy of the book at 99pi.org/book.
Exploring The 99% Invisible City
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The 99PI Anniversary Special: 15 for 15
For 99PI’s 15th anniversary, Roman sits in the hot seat to answer 15 eclectic questions, touching on everything from his dream merch to the one object he's always wanted to cover on the show.
50 mins
2 September Finished

Ambassador Bridge
A billionaire family’s private bridge empire shaped Detroit for decades, sparking battles over power, neighborhoods, and the future of an international crossing.
40 mins
26 August Finished

All About That Bass
Vintage music barely had any bass. Today’s hits are all about the low end. What changed?
25 mins
19 August Finished

Sister Aimee and the Birth of the Megachurch
Aimee Semple McPherson built America’s first megachurch, blended showbiz with salvation, and vanished in a scandal that captivated the nation.
36 mins
12 August Finished

Weeding is Fundamental Revisited
The fight over weeding books from the library.
38 mins
5 August Finished