Each year, 99% Invisible producers select short design stories to talk about with host Roman Mars. Some of these were just too brief to make into full 99pi episodes, but many also reveal aspects of how we find ideas for (and ultimately make) the show. In this collection, we'll talk about...

Mastering any physical skill takes practice. Practice is the repetition of an action with the goal of improvement, and it helps us perform with more ease, speed, and confidence. But what does practice actually do to make us better at things? Annie Bosler and Don Greene explain how practice...

The fossil fuel industry knows how to stop global warming, but they're waiting for someone else to pay, says climate science scholar Myles Allen. Instead of a total ban on carbon-emitting fuels, Allen puts forth a bold plan for oil and gas companies to progressively decarbonize themselves and...