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The challenge: Come up with an artificial intelligence project that by itself can come up with a TED talk so good it gets a standing ovation.
This story initially misquoted Nelson. Regarding gold, he actually said "there will always be a limited supply."
We take a look at the official app for the wildly popular TED Web site. With it, you can access more than 1,000 videos all recorded at TED's conferences from around the globe.
Attendees at TED in Scotland laud a robot seagull that flies like the real thing.
Reflections on the Keynote by Ted Landau
Keynote thoughts by Ted Landau
Michael Jackson's glittery glove may be the most famous mitten in music, but it's not the most high-tech: that honour goes to the gadget-packed gloves worn by dulcet-toned diva Imogen Heap.
At the TED conference, prizes are given to the founder of SETI, an ocean explorer for Google, and a classical-music trainer, to help them work on their big ideas.
Watch three remarkable people reveal their wishes to change the world live from the TED Conference in Long Beach, Calif., via Webcast Thursday.