NOVA
PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.

Season 35 · Episode 2 ·
Ghost in Your Genes
Experts investigate how a mysterious "second genome" helps determine our biological fates.
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Episode 2 of season 35 of NOVA: “Ghost in Your Genes”. Aired 2007-10-16. Watch it online free on ZapFlix.