When did NOVA Season 8 Episode 18 air?
NOVA Season 8 Episode 18 aired on November 22, 1981 at 9 PM ET.


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.
You are not alone! Like it or not, every human being and virtually every living creature is, in a sense, owned and operated by legions of prehistoric organisms, hordes of them in each cell in the body. That is one of the startling revelations as NOVA explores the mysterious wonder of life with Dr. Lewis Thomas, a leading biologist and award-winning author described by Time as "quite possibly the best essayist on science anywhere in the world."
Direct answers for episode-level questions and details.
NOVA Season 8 Episode 18 aired on November 22, 1981 at 9 PM ET.
This episode runs for approximately 55 minutes.
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