TED Radio Hour

In the last century, human life expectancy has doubled. This hour, we talk with writer Steven Johnson on the many breakthroughs that made this possible — and where we go from here.To manage podcast ad preferences, review the links below:See pcm.adswizz.com for information about our collection and use of personal data for sponsorship and to manage your podcast sponsorship preferences.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy