99% Invisible

Roman Mars voices the kind of design podcast that sneaks education past your defenses. 99% Invisible finds stories in curb cuts, airport carpets, and the reason your hotel bathroom has that particular tile. Mars speaks in measured cadences about invisible infrastructure. Twenty minutes later you understand why manhole covers are round and why that matters.

The show launched in 2010 from a KALW closet in San Francisco. Mars had architecture school behind him and radio instincts ahead. He built episodes around single objects, single decisions, single moments when someone chose form over function or function over form. The Bronx River Parkway. The Heydar Aliyev Center. Robert Moses bridges built too low for buses. Stories that sound academic until you realize you live inside them.

Mars assembled a team that reports like journalists and explains like teachers. Producer Avery Trufelman dissected fashion. Katie Mingle traced power grids. Kurt Kohlstedt mapped forgotten infrastructure. They find experts who spent decades thinking about one thing, then translate that obsession into twenty minutes of audio that changes how you see parking meters.

The podcast moved to Radiotopia in 2014, part of PRX's public radio evolution. Mars raised money through Kickstarter, published The 99% Invisible City, and proved that audiences hunger for stories about the designed world. Each episode delivers the same promise. You walked past something today without seeing it.