Steven Johnson: Why We're Living Longer

Play is how we evolved to learn, solve problems, and navigate the world. So why do we treat it as optional? This hour, the science of play — and what happens when we don’t get enough of it.Guests include psychology researcher Peter Gray, sailor and social activist Tracy Edwards a ...  Show more

You don't need to be big and boisterous to pack a punch. This hour, TED speakers explore the surprising strength of all things minuscule and fleeting. Guests include microbiologist Anne Madden, cognitive scientist Lera Boroditsky, former educator YeYoon Kim and former industrial ...  Show more

Doubling human life expectancy in a century is our greatest achievement, says author Steven Johnson. How did we make it happen -- and can we keep it going? Backed by fascinating historical anecdotes, he shares some life-lengthening innovations and reminds us of three key things n ...  Show more

Doubling human life expectancy in a century is our greatest achievement, says author Steven Johnson. How did we make it happen -- and can we keep it going? Backed by fascinating historical anecdotes, he shares some life-lengthening innovations and reminds us of three key things n ...  Show more

Over the past century, the average human lifespan has doubled. That astonishing statistic is the subject of a new book and PBS series by acclaimed science writer Steven Johnson called “Extra Life: A Short History of Living Longer.” In this episode, he tells Rufus about the renega ...  Show more

Steven Johnson, author of Extra Life, tells the fascinating history of life expectancy, and the extraordinary achievements of the last century, in which it has practically doubled.It’s a story that has data at its heart, from the ground-breaking invention of the category itself i ...  Show more