99% Invisible Roman Mars

The weirdness of Presidential libraries

The great Jacob Goldstein, author of Money: The True Story of a Made Up Thing, stops by to tell us two stories about the design of paper currency around the world. First, the story of the making of the Euro banknotes, the design of which was supposed to unify Europe and not rely on any one country's national heroes or monuments. Then we learn about China's early pioneering experiments in paper currency, hundreds of years before it caught on in the rest of the world.

Axolotls are nature’s great regenerators. They are able to grow back not just their tails, but also legs, arms, even parts of vital organs, including their hearts. This remarkable ability is one of several traits that turned the axolotl into a scientific superstar. The axolotl is one of the most abundant laboratory animals in biology. They can be found swimming in tanks at universities all around the world. But in the wild they’ve only ever been found in one place: Mexico City.

How the science of color made us modern

What does water mean to you? In this feature, author Bonnie Tsui (Why We Swim), actress Joy Bryant, submarine pilot Erika Bergman, figure skater Elladj Baldé, 85-year-old synchronized swimmer Barbara Eison-White, professional mermaid Olivia Gonzales, and others share stories about the many ways water influences our lives.

When Roman Mars and Kurt Kohlstedt were promoting The 99% Invisible City in late 2020, one question came up over and over again in conversations and interviews about our built environment: in what ways will the COVID pandemic change cities long term? Realistically, it's hard to answer a question about the future while in the midst of a crisis, but we can look to and extrapolate from precedents, like: designs born out of past disasters.