Emily Blunt reads for the Sum audio book

Hear the actress Emily Blunt (Young Victoria, Devil Wears Prada) read "The Cast" from Sum. She is one of the dozens of terrific actors who read for the audio book.

Musician Jarvis Cocker reads from Sum

Listen to British rocker Jarvis Cocker read the story "Descent of Species" from Sum. He is one of the dozens of terrific voices who read for the audio book.

The secret life of the lab

Want to know more about the inner workings of a neuroscience lab? Watch a video profile of David and his students on NOVA Science Now.