In Extra Life, acclaimed science writer Steven Johnson told the remarkable story of the breakthroughs that helped us double our life expectancy in the last century. Now, in Immortality: A User's Guide, he asks: what will happen if we do it again?

Imagine a world where we flip a switch and suddenly everyone can expect to live to 120 or beyond. Some scientists believe this demographic shift is within the realm of possibility, which might seem like good news, but a dramatic extension of the average lifespan could plunge the planet into a maelstrom of unintended consequences and second-order effects.

That's why we need to start thinking about the implications of radical life extension now.

Immortality: A User's Guide takes listeners on a thrilling journey through recent scientific history and reveals the cutting-edge technology that may help us live deep into our second centuries. Featuring insightful conversations with longevity experts, archival footage, immersive sound design, and Johnson's trademark storytelling, Immortality explores the recent paradigm shift in our understanding of aging and wrestles with what we should do, as a society, to prepare for advances in science and technology that may radically transform the potential length of human life.