Dr Helen Czerski looks at volcanoes. New thermal imagery and ultra high-speed photography capture the complex processes crucial to understanding how and why they erupt. Show more
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Dr Helen Czerski looks at volcanoes. New thermal imagery and ultra high-speed photography capture the complex processes crucial to understanding how and why they erupt. 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.
