Doppelgangers

The term can refer to a double, a ghost, a shadow. But it can mean much more. From our online mirror world, to digital simulators, to the Earth's twin--TED speakers learn from the uncanny second self. Guests include author Naomi Klein, aerospace engineer Karen Willcox, planetary scientist Sarah T. Stewart and psychologist Nancy Segal.TED Radio Hour+ subscribers now get access to bonus episodes, with more ideas from TED speakers and a behind the scenes look with our producers. A Plus subscription also lets you listen to regular episodes (like this one!) without sponsors. Sign-up at plus.npr.org/ted.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

Om Podcasten

Exploring the biggest questions of our time with the help of the world's greatest thinkers. Host Manoush Zomorodi inspires us to learn more about the world, our communities, and most importantly, ourselves.Get more brainy miscellany with TED Radio Hour+. Your subscription supports the show and unlocks a sponsor-free feed. Learn more at plus.npr.org/ted