Horizon Season 37 Episode 17
Episode Title: Snowball Earth
Genre:
Documentary
Countries:
UK,
Airing Date: February 22, 2001
Runtime:50 mins
IMDb Rating:
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Horizon: This episode of Horizon documents the story of conjoined twins, who are among the rarest of human beings. There are probably fewer than a dozen adult pairs living in the world today. Only a few hundred pairs of conjoined twins are born in the whole world each year - they appear about once in every 100,000 births - but more than half of them are stillborn, and one in three live for only a few days. Of those who survive, a very small number will be selected for separation surgery.