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The launch of a revolutionary new telescope is the subject of this Storyville documentary. It's accompanied by a run of related programmes on BBC Four.
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This special series of programmes marks 200 years since the birth of Charles Darwin, the man who changed the way we think about life on earth.
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Radio 4 follows whales, birds and other creatures as they move around the continent.
The search for animals on the edge of extinction - watch Stephen Fry's dispatches online.
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