Alan enters the lab at Yerkes hoping to learn about chimpanzees and facial recognition. But instead, the chimps show Alan and the crew who's boss.

Psychologist Vicky Horner discusses research into chimpanzee cultural transmission. Do chimps have "culture" like humans?

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

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.

Larry Engel discusses the challenges and joys of filming Alan with the chimps at the North Carolina Zoo.

We went to the North Carolina Zoo to meet the chimpanzees -- and evolutionary anthropologist Brian Hare. Here's what happened...

We’ve just finished shooting at Duke University a series of experiments with Tanya Chartrand on how humans unconsciously mimic each other, and how this makes us more social.

Here are some additional behind-the-scenes photos of the "Human Spark" nighttime campfire shoot with archaeologist Curtis Marean.

In Arizona, Alan and archeologist Curtis Marean had a fireside chat about how modern humans replaced the Neanderthals. Check out this video to see how the scene was made.

In Oregon, we peered with both an MRI and a brain wave monitor into Alan’s brain to find out how he employs it for language and tool use.