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Could shinier farmland help combat global warming?
15 January 2009
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Long-lost mineral could help explain planet's thin atmosphere.
19 December 2008
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Experts worry practicality may win over science in final selection.
07 November 2007
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Fourth round of IPCC pins down blame for global warming.
02 February 2007
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UK firm unknowingly synthesizes smallpox fragment.
14 June 2006
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Geoengineering schemes, such as brightening clouds, are being talked about ever more widely. In the third of three features, Oliver Morton looks at how likely they are to work.
29 April 2009
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13 August 2008