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Botany: A Blooming History

Episode 2: Photosynthesis

Duration: 59 minutes

on BBC Four HD

Timothy Walker looks at how 17th-century botanists made the connection between the growth of a plant and the energy from the sun - the process of photosynthesis. Show more

BBC Four HD

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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.