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Peacocks, Parasites And The Puzzle Of Sex
What's the purpose of sex? To protect us from disease! Brian Leith unravels the intricate puzzle of sex and finds that: Males seem to be a waste of time and energy - many of the successful plants and animals (like the weeds in your garden) do without them altogether! Big animals - from polar bears to human beings - always have males as well as females - for a very good reason! The vital clue to the mystery lies in parasitism and infection. Out of the puzzle emerges a sparkling new theory of sex that looks set to keep biologists buzzing for years.
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Episode 1: Among The Wild Chimpanzees
Episode 2: One Man's Island
Episode 3: Invaders Of The Truk Lagoon
Episode 4: The Desire Of The Moth
Episode 5: A Question Of Space
Episode 6: Peacocks, Parasites And The Puzzle Of Sex
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Episode 7: Land Of Ice And Fire
Episode 8: The Lost World Of Medusa
Episode 9: Kinabalu - Summit Of Borneo
Episode 10: Wild Ireland