Using segments from the PBS program: The Human Spark, students learn about the changes that occur in children as they grow. (Grades 9-12)

Alan Alda finds out how human social networks compare to those of chimps and watches babies pick cooperative puppets over those that won't play.

Cognitive psychologist Elizabeth Spelke tests the representational thinking skills of children by asking them to relate a map to the real world.

Alan Alda explores how much humans and chimps have in common, and what sets us apart. Watch the full episode now.

Scroll through this interactive feature to learn a bit about some of the evidence Alan examined as well as some of the current debates in the field.

Alan Alda finds out how children will help—and like it, while chimps are less inclined to offer enthusiastic assistance.

One of the earliest things American children are taught is how to count items out loud. But how much do we understand about numbers before we learn this vocabulary?

Check out these behind-the-scenes photos from our day filming with Helen Neville and colleagues at the Brain Development Lab at the University of Oregon.

New research shows that humans' instinctual and symbolic number systems may be more closely related than was previously thought. Test your own approximation skills!

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.