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.
A passionate techie and a shrewd businessman, Bill Gates changed the world once, while leading Microsoft to dizzying success. He plans to do it again with his very own style of philanthropy.
Full bio: http://www.ted.com/index.php/speakers/bill_gates.html