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Dan Goldin bids farewell to Nasa
The career of Dan Goldin, Nasa's outgoing administrator who promoted "faster, cheaper, better" space programmes. How studying the medieval Black Death offers hope for Aids treatment. How do you persuade endangered abalones to breed? Costa Rican cloud forests are losing their clouds.
成人快手 World Service Archive
This programme was restored as part of the World Service archive project
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Science In Action
The 成人快手 brings you all the week's science news.
