Can you use Google and Twitter? If so, wrangle with these trivia questions to receive free science DVDs.

We took a look inside Alan's brain using an MRI machine. Apparently he has quite a plump hippocampus.

Dan Gilbert and Alan Alda discuss whether animals have the ability to "prospect," or plan ahead.

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!

Harvard's Marc Hauser has coined his own term for what we’ve been calling the Human Spark – humaniqueness.

Amanda Henry showed us how she very gently scrapes dental plaque from the Skhul 5 skull’s molars to find out what our ancestors may have eaten.

Harvard's Dan Lieberman argues that we humans evolved to become the best long-distance runners on earth -- and we did it barefoot!

Language is central to Steven Pinker's conception of what makes us human.

Just ten years ago, the prevailing view was that the modern human mind suddenly gelled in Europe some 35,000 years ago. Alison Brooks and her colleague Sally McBrearty have challenged that notion.