Jordan "DJ Earworm" Roseman: Music from the Crowd

Most widely known for his annual 25-song mashup video "United State of Pop," DJ Earworm has been working as a San Francisco-based producer and performer since 2003. He first landed on the music scene after being hired by MTV as resident DJ during the 2005 MTV Music Video Awards in South Beach, Fla.

Mac Barnett: Why a good book is a secret door

Childhood is surreal. Why shouldn't children's books be? In this whimsical talk, award-winning author Mac Barnett speaks about writing that escapes the page, art as a doorway to wonder — and what real kids say to a fictional whale.

Dan Gilbert: "Human beings are works in progress that mistakenly think they're finished."

"Human beings are works in progress that mistakenly think they're finished." Dan Gilbert shares recent research on a phenomenon he calls the "end of history illusion," where we somehow imagine that the person we are right now is the person we'll be for the rest of time. Hint: that's not the case.