"Where did we come from? What makes us human? NOVA's ... investigation explores how new discoveries are transforming views of our earliest ancestors. Featuring interviews with world-renowned scientists, footage shot "in the trenches" as fossils were unearthed, and ... computer-generated animation, [these programs] bring early hominids to life, examining how we became the creative and adaptable modern humans of today ... In the first episode ... encounter...

Scientists are coming to understand fat as a fascinating and dynamic organ - one whose size has more to do with biological processes than personal choices. Through real life stories of hunter-gatherers, sumo wrestlers, and supermodels, Nova explores the complex functions of fat and role it plays in controlling hunger, hormones, and even reproduction.