Margaret Aro

Welcome to TED, where the world's great minds come to dream the impossible and show that it's happening. This week in Long Beach, Calif., the room gasped at the sight of something that could revolutionize medicine: organs created, in effect, as Xerox copies. Dr. Anthony Atala, the director of the Wake Forest Institute for Regenerative Medicine, has spent 30 years studying the ability to grow and regenerate human tissue.

Shocking video from a Chicago block party that appears to show a woman being thrown against a squad car and an officer striking a man with a baton is one of the many materials released today by Chicago's Independent Police Review Authority as a part of a new transparency policy. Video, audio and other materials from 101 open cases involving the Chicago police were made public today in what IPRA Chief Administrator Sharon Fairley called a “historic" release.

Less than three hours before the clock struck midnight in Dubai, flames engulfed the city's luxurious Address Downtown Hotel, mere blocks from where a spectacle of lights and fireworks was scheduled. As spectators in Dubai and all over the the world watched the flames overtake the hotel, a Filipino photographer stuck on the hotel's 48th floor struggled to make his way down. He caught his dramatic escape on a GoPro camera.