S21E2 — Cystic Fibrosis / Whooping Crane / Cold-Water Survival
The Nature of Things — Season 21, Episode 2.
A report on cystic fibrosis, a genetic respiratory ailment that afflicts young people; the International Crane Foundation's work to save endangered species of birds is documented; and hypothermia, which involves the impact of very cold water on the human body, is examined.
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