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

Alan Alda confronts the puzzle of why our ancestors got the Spark and evolved into us, while the first humans to leave Africa for Europe--the Neanderthals--never did.

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.

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 meets with scientist Juliane Kaminski and a very smart dog named C.J. Dogs have some talents that even chimpanzees don't.

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.

Duke University psychologist Tanya Chartrand enlists Alan as a participant in her research, and shows that subtle mimicry can lead to positive emotions.

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?

John Shea at Stony Brook University is keeping alive the stone toolmaking technologies used by our most ancient ancestors.