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Dangerous Earth

Episode 6: Iceberg

Duration: 30 minutes

on BBC Four HD

The latest scientific insights into icebergs, from side-scanning sonar scrutinising the edge of glaciers to pictures that give us a unique glimpse of how they transform over time. Show more

BBC Four HD

About BBC Four

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.