See what other people said they think makes us human. Then, share YOUR spark in text, photos, artwork, or video.

A Web site called Test My Brain lets you participate in online experiments and get feedback about how you compare to other online participants.

Producer Graham Chedd thought a chat en plein air would add some visual variation from the two-guys-sitting-on-a-couch-type shot that's always easy to get in a professor’s office.

Submit your drawings, photos, videos, or text that answer the question, "What makes us human?" Your responses will be posted on this web site, and a selection will appear on-screen during the broadcast!