As machines grow ever more intelligent, they're emerging not just as powerful tools, but close companions. These talks -- while offering some whizzy demos -- examine how robots are becoming an intimate part of our lives.
The extra candles on the birthday cake, the little lines you notice in the mirror ... aging doesn't always feel good. But remember, age also brings wisdom and balance. Watch these reminders of the benefits that come with age.
More than 2.3 million people in the United States are in prison or jail. Here, talks that speak to the experience of life behind bars—and different perspectives on what can make it a rehabilitating experience.
Brandon Boyd, lead singer of Incubus, says, "I hope to one day perform live music on the moon. Perhaps if all goes according to plan, we can make a TED Talk out of it!" We eagerly await this event. Until then, here are his favorite talks.