Natural World - Season 3 - Eps 6: 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.
About Natural World
Title: Natural World
First Air Date: 1983-10-30
Last Air Date: 2020-03-20
Status: Returning Series
Rating: 7.1/10 (from 25 votes)
Language: EN
Seasons: 40
Total Episodes: 543
Network: BBC Two
Genres: Documentary
Production Companies: BBC Studios, BBC Studios Natural History Unit, BBC
Synopsis
Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.
Cast
David Attenborough
Self - Host
John Hannah
Narrator (voice)
Juliet Stevenson
Narrator (voice)
