Explore the origin of our solar system and the start of life itself, how head lice figure in human evolution, and more. NOVA takes us on a journey to the beginning of time and back. Head Lice isn’t a species that often comes up when talking about philosophical and scientific questions about where the human race comes from.  Now, scientists are listening.

Part 1 explores the origins of our solar system

Part 2: Molecules. When and How did molecules become alive?

Part 3: Life and Lice. The secrets behind head lice and human evolution.

Part 4: Erasing Memory. Worth watching, even if you are destined to forget most of what you learn.

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