Scientist Keith Jensen plays the Ultimatum Game with Alan Alda and shows him the differences between how humans and chimps react to various offers.

Alan Alda joins John Shea for a lesson on Primitive Technology. Alan makes hand axes like a Neanderthal, but throws a pretty mean spear at an unsuspecting doe.

Alan Alda travels to a French cave called Roc de Marsal, where archaeologists are becoming experts on Neanderthal life.

Director or Photography Larry Engel explains some of the work that went into lighting a scene at the American Museum of Natural History in New York.

Alan Alda, Series Producer Graham Chedd, and Executve Producer Jared Lipworth participated in a live webcast this week, hosted by the National Science Foundation.

If you’re a chimp, making friends is straightforward – put in some time grooming your buddy and hopefully you’ll stay on his good side. Not so for humans.

Which came first – the running or the brain? Running could be the reason humans were able to hunt large game and consume the protein needed for a big brain.

The Human Spark crew members had to keep our wits about us when we filmed on the Puerto Rican island of Cayo Santiago. It’s home to a free-ranging group of monkeys!

In this video, Laurie Santos pulls a switcheroo on her monkey research subjects. Will they notice when a fruit that starts rolling down a plank as a kiwi reaches the bottom as a lime?

A new study looked at how macaque monkeys respond to other monkeys’ efforts at communication in the form of drumming or vocalizing.