Editor's choice
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Sir Patrick Moore: the eccentric amateur who became a TV star
Astronomers and friends salute colourful presenter of The Sky at Night who died at home after a short illness
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Science Weekly podcast: James Watson and The Double Helix
Audio (34min 09sec) As a new edition of The Double Helix is published, James Watson talks about the role of Rosalind Franklin in discovering the structure of DNA
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Drug-resistant C difficile bug traced to source in US and Canadian hospitals
Researchers use powerful genetic techniques to reconstruct disease's route around the world from North America
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DNA of 100,000 people to be mapped for NHS
Government hopes public health programme will revolutionise treatment and prevention of cancer and other diseases