Hidden systems, made visible.
99% Invisible follows the hidden logic inside ordinary life. Recent episodes trace robot umpires, city trash cans, 311 calls, traffic lights, Mars theories, and constitutional amendments with patient reporting and plainspoken curiosity.
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99% Invisible is a reported design and infrastructure show with a talent for finding the strange machinery inside familiar life. It often begins with a tiny problem. Someone cannot find a car, a red light refuses to change, a city sidewalk has no trash can, or a baseball player disagrees with a strike call. From there, the story widens. The show follows the institutions, rules, sensors, contracts, habits, and history that make the problem possible. Recent episodes show that range clearly. Robot umpires raise questions about accuracy, fairness, and the human flexibility built into baseball. A Brooklyn towing story turns an empty parking lot into a trap with its own invisible business logic. Phoenix's electrical grid becomes a life-or-death system during extreme heat, because the city cannot function without air conditioning. San Francisco litter leads to trash can placement, street dumping, public works investigations, and the way dirty places invite more mess. Los Angeles traffic signals become a story about space, time, pavement sensors, and engineers trying to move too many people through fixed streets. A 311 episode studies the voice of the city itself, including how call agents turn frustration into service requests. The Constitution series brings the same explanatory patience to amendment rules and political repair. A Mars episode reaches backward into astronomy, newspapers, Nikola Tesla, and the old belief that canals proved intelligent life beyond Earth. The show is careful without feeling airless. It likes definitions. It also likes odd details. Interviews can run long, but the narration keeps bringing the listener back to the basic question: how does this thing actually work? That makes the show useful for people who enjoy design, cities, civic systems, sports rules, media history, and the everyday consequences of bureaucratic choices. Its humor is usually dry and situational, coming from the gap between how systems are supposed to work and how they behave in public. Its gravity comes from the same place. A trash can, a grid, or a strike zone is never only itself here; it is a small opening into power, maintenance, judgment, and the compromises that keep ordinary life moving.
Made for: For listeners who enjoy reported stories about design, cities, infrastructure, sports rules, history, and everyday systems. It especially suits people who like curiosity with structure, not hot takes.
What sets it apart: 99% Invisible turns mundane problems into clear narrative investigations without losing the texture of interviews, history, and practical detail. Its strength is showing how design decisions meet real human behavior in streets, stadiums, call centers, grids, and public institutions.
Design is everywhere in our lives, perhaps most importantly in the places where we've just stopped noticing. 99% Invisible is a weekly exploration of the process and power of design and architecture. From award winning producer Roman Mars. Learn more at 99percentinvisible.org.
Based on 6 episodes we listened to · September 2026
99% Invisible makes systems legible by tracing how design decisions, legal rules, and practical inventions shape everyday life.
99% Invisible follows systems into the places where their workings become visible. Roman Mars moves between constitutional interpretation and built-environment reporting, using close questions, expert guests, and carefully developed narratives to make complex structures…
A 75-pound sea clock becomes your gateway to the Constitution's invisible machinery.
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Short reviews from the PlayNext desk, based on the episodes we processed.
A robot strike zone story about accuracy, consistency, and baseball's human habits.
Baseball's robot umpire story makes a clear case for accuracy and consistency. It starts with the current ABS challenge system, then moves back through the long human habit of adjusting the strike zone to context, which gives the robot umpire setup real weight.
A paper cup opens onto San Francisco's trash-can experiments, litter habits, and the lessons streets quietly teach.
San Francisco's litter problem starts with a small civic puzzle: after pizza, where does a paper cup go? Roman Mars turns a walk from Tony's Slice House in North Beach into a look at trash-can placement, public habits, city trials, and the hard life of the cans themselves.
A patient look at the Constitution's amendment valve, and why every fix reveals a deeper argument.
Article 5 is treated less as a civics footnote than as the Constitution's quiet pressure valve. Roman Mars and Elizabeth Jo bring Jill Lepore in to trace how amendments succeed and fail, using that history to show a republic trying to make room for change without drifting into…
A frustrating intersection becomes a sharp look at the sensors, algorithms, and human calls behind Los Angeles traffic.
A Los Angeles red light turns into a neat, compact look at how a city manages scarcity. Vivian Lay and Cody are heading toward the Fairfax, Olympic, and San Vicente intersection at 5:41 p.m., where two signals sit only a couple hundred feet apart.
A patient look at how a city complaint becomes a routed request.
A call about a city service problem becomes a compact civic puzzle: who picks up, what they need, and how a complaint is shaped into a routed request.
When Mars looked inhabited, the real story was how authority helped the idea spread.
The episode uses Mars as a mirror for terrestrial appetite, following a moment when intelligent life on the planet seemed plausible enough to influential figures to reach newspapers, lecture halls, and private conviction.
A coast-and-longitude story that makes Harrison's clock feel practical, not abstract.
The episode puts the Isles of Scilly in sharp relief: beautiful, but not gentle. The warm Gulf Stream gives the islands their edge, while churning water and jagged rocks keep the mood uneasy. That contrast does a lot of work on its own, without needing to be pushed.
A clear look at how states push back when federal power reaches too far.
This episode treats constitutional federalism as a live civic argument, using Article 4 and the Tenth Amendment to show how state power and federal power are meant to meet.
Two product designers talk Figma workflows, button sizing, and AI design tools weekly.
Stockholm hosts James Royal-Lawson and Per Axbom interview UX and accessibility experts.
Four design-business owners, including Design Cuts' Tom Ross, talk pricing, agencies, and creative burnout.
Monocle's design team tours museums, furniture studios, and landmark houses each week.
Robot umpires are finally here.
Kelly Prime thought her 2011 Mazda 6 had been stolen from a brightly lit 7-Eleven lot in Brooklyn after a 15-minute takeout stop.
This episode explores how Phoenix's electrical grid manages extreme heat and air conditioning demands during record-breaking temperatures.
Roman Mars wants a trash can.
Article 5 looks dull on paper.
Los Angeles starts at a standstill.
What happens after someone calls the city?
Mars once looked inhabited.
Where are we, exactly?
Article 4 is the states chapter.
Roman Mars starts with a measurement puzzle that gets stranger the closer it comes to the ground.
The walk starts in a parking lot.
Idaho had a souvenir problem.
Her thousands of dashes become the episode's larger mystery: a tiny mark that can hold a thought open, rush it along, and let a poem refuse to settle.
Article 3 is short, almost weirdly so.
A spreadsheet starts the question.
Short audio needed a home again.
A simple invitation opens the door.
This episode of 99% Invisible features mini-stories, starting with a producer discussing the controversial Laser Racer swimsuit launched by Speedo in 2008 for the Olympics.
First, Kurt Kolstad works on the voice.
Article II seems plain enough at first.
The host introduces a tradition of mini-stories and kicks off with a producer revisiting a story about the Great American Pyramid in Memphis, now a Bass Pro Shop.
This episode explores the invention of the saxophone by Adolf Sax and its impact on music.
Two hunters discover a mysterious lone mountain in Wyoming that leads to uncovering its hidden historical significance.
This episode explores the concept of a good neighborhood through the lens of design and television.
An interview with former Secretary of Homeland Security Janet Napolitano analyzing Article 2 of the U.S.
Roman Mars interviews comedy writer Elliot Kalin about his book on the craft and system of writing jokes.
Roman Mars and Ben Brock Johnson promote their new miniseries Hidden Levels about video games' impact on culture, in a crossover with the Get Played podcast.
A bonus episode sponsored by Get Your Guide, where host Roman Mars begins a guide to his favorite stories about San Francisco, starting with its most famous building.
This episode explores the history of zoot suits and their connection to WWII, Japanese internment, and labor shortages.
Kurt Kolstad shares his personal journey with assistive technology after a sudden injury that paralyzed his arm.