From: TED on Tue, Jun 24 2008 10:16 AM

Dan Gilbert, author of Stumbling on Happiness, challenges the idea that we’ll be miserable if we don’t get what we want. Our "psychological immune system" lets us feel truly happy even when things don’t go as planned.

From: TED on Tue, Jun 24 2008 10:16 AM

Pastor Rick Warren, author of The Purpose-Driven Life, reflects on his own crisis of purpose in the wake of his book’s wild success. He explains his belief that God's intention is for each of us to use our talents and influence to do good.

From: TED on Tue, Jun 24 2008 10:16 AM

Daniel Goleman, author of Emotional Intelligence, asks why we aren’t more compassionate more of the time.

From: TED on Tue, Jun 24 2008 10:16 AM

We’ve known about global warming for 50 years and done little about it, says Google.org director Larry Brilliant. In spite of this and other depressing trends, he's optimistic and tells us why. From Skoll World Forum, Oxford, UK, www.skollfoundation.org

From: TED on Tue, Jun 24 2008 10:16 AM

In our hyperlinked world, we can know anything, anytime. And this mass enlightenment, says Buddhist scholar Bob Thurman, is our first step toward Buddha nature.

From: TED on Tue, Jun 24 2008 10:16 AM

Tony Robbins discusses the "invisible forces" that motivate everyone’s actions — and high-fives Al Gore in the front row.