http://www.ted.com John Hunter puts all the problems of the world on a 4’x5′ plywood board — and lets his 4th-graders solve them. At TED2011, he explains how his World Peace Game engages schoolkids, and why the complex lessons it teaches — spontaneous, and always surprising — go further than classroom lectures can.

http://www.ted.com All over the planet, giant telescopes and detectors are looking (and listening) for clues to the workings of the universe. At the INK Conference, science writer Anil Ananthaswamy tours us around these amazing installations, taking us to some of the most remote and silent places on Earth.

http://www.ted.com Medical ethicist Harvey Fineberg shows us three paths forward for the ever-evolving human species: to stop evolving completely, to evolve naturally — or to control the next steps of human evolution, using genetic modification, to make ourselves smarter, faster, better. Neo-evolution is within our grasp. What will we do with it?

http://www.ted.com Most of us will do anything to avoid being wrong. But what if we’re wrong about that? “Wrongologist” Kathryn Schulz makes a compelling case for not just admitting but embracing our fallibility.

http://www.ted.com At TEDxGPGP, Jackson Browne plays a song he started writing last April aboard Mission Blue Voyage, the Sylvia Earle-inspired trip to brainstorm ways to save the ocean. “If I could be anywhere,” he sings, “anywhere right now, I would be here.”

http://www.ted.com Ric Elias had a front-row seat on Flight 1549, the plane that crash-landed in the Hudson River in New York in January 2009. What went through his mind as the doomed plane went down? At TED, he tells his story publicly for the first time.