What makes sharks built for speed? How do snakes move without limbs? How do sugar gliders fly without feathers? The answers all lie in their skin. Show more
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What makes sharks built for speed? How do snakes move without limbs? How do sugar gliders fly without feathers? The answers all lie in their skin. Show more
BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.
