Bono picks 8 talks that express powerful ideas -- and shares exactly why each needs to be spread far and wide.

How does the metaphorical lightbulb go off? Is it a flash of genius? The power of crowds? These heady talks explore the nature of ideas themselves: Where they come from, how they evolve, and how each of us can nurture them.

Ever dreamed of starting your own business? These talks can help get your idea off the ground.

From Twitter to word of mouth, explore the ways ideas spread so quickly from person to person.