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.

We started in the morning with what turned into a rather chaotic fMRI scene -- six people in two locations. And the magnetism of the equipment made filming complicated.

Larry Engel, Director and Director of Photography for "The Human Spark," shares his initial thoughts on his task of filming Alan Alda.

Alan Alda gives an introduction to "The Human Spark," a new series that explores the question, "What makes us human?"

Graham Chedd tells the story of what happened at the European Synchrotron Radiation Facility, where researchers were examining Neanderthal teeth with a high-power x-ray.

How long did it take Neanderthals to grow up? Graham Chedd meets with researchers who are using a giant particle accelerator to find an answer to this question.