Bill Gates hopes to solve some of the world’s biggest problems using a new kind of philanthropy. In a passionate and, yes, funny 18 minutes, he asks us to consider two big questions and how we might answer them. (And see the Q&A on the TED Blog.)

Rice University professor Richard Baraniuk explains the vision behind Connexions, his open-source, online education system. It cuts out the textbook, allowing teachers to share and modify course materials freely, anywhere in the world.

At the 2008 Serious Play conference, designer Tim Brown talks about the powerful relationship between creative thinking and play — with many examples you can try at home (and one that maybe you shouldn’t).

Sharing powerful stories from his anti-obesity project in Huntington, W. Va., TED Prize winner Jamie Oliver makes the case for an all-out assault on our ignorance of food.

Speaking at a London girls’ school, Michelle Obama makes a passionate, personal case for each student to take education seriously. It is this new, brilliant generation, she says, that will close the gap between the world as it is and the world as it should be.

Bennington president Liz Coleman delivers a call-to-arms for radical reform in higher education. Bucking the trend to push students toward increasingly narrow areas of study, she proposes a truly cross-disciplinary education — one that dynamically combines all areas of study to address the great problems of our day.

Speaking at LIFT 2007, Sugata Mitra talks about his Hole in the Wall project. Young kids in this project figured out how to use a PC on their own — and then taught other kids. He asks, what else can children teach themselves?

Sir Ken Robinson makes an entertaining and profoundly moving case for creating an education system that nurtures (rather than undermines) creativity.

With all the intensity and brilliance for which he is known, Alan Kay envisions better techniques for teaching kids by using computers to illustrate experience in ways -– mathematically and scientifically — that only computers can.

The BrainMatch Pilot Program will kick off very soon. Thank you to all of our participants and supporters. We couldn’t have done it without you.