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A clip from Channel 4's Inside Nature's Giants in which Richard Dawkins shows the recurrent laryngeal nerve of the giraffe during a dissection. The nerve takes a long detour down the neck and back up.

A clip from Attenborough's Life of Mammals following a San tribesman in the Kalahari on an eight-hour persistence hunt, running down a kudu through harsh heat. It shows tracking, endurance running and the hunter's reaction after the kill.

First episode of the Norwegian documentary series Hjernevask, in which Harald Eia interviews researchers on the nature versus nurture debate. It focuses on the gender equality paradox and gender differences in career choice.

A short BBC Planet Earth clip from the Pole to Pole episode showing the courtship displays of birds of paradise.