Larry Engel and the crew head to Stony Brook, where Alan Alda gets a lesson in primitive weapon- and bead-making from experimental archaeologist John Shea.

Scientists are attacking the question of how we became human from a number of new directions – in addition to analyzing the evidence of ancient fossils.

Check out this video to learn more about Lisa Parr's studies on chimp emotions and what these studies can tell us about the human spark.

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?

Pyroengineering. A big word for what early modern humans learned to do with silcrete at least 72,000 years ago, according to researchers.

Talk about "oldies" music! Scientists recently uncovered the oldest musical instruments, in the form of carved bone and ivory flutes.

Can you use Google and Twitter? If so, wrangle with these trivia questions to receive free science DVDs.

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

Dan Gilbert and Alan Alda discuss whether animals have the ability to "prospect," or plan ahead.