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What causes Asia's brown cloud?
The brown cloud over Asia in winter is caused largely by soot from small domestic fires
Soot produced by small domestic fires is found to be by far the largest component of the huge brown cloud of pollution over south Asia in winter that contributes to climage change and damages health.
A microbot prototype designed to heal from within the body will be tested in pig blood vessels. A new project to enable mobile phones to screen for diseases. Using computers to test whether human language is a product of genes or culture.
ÃÛÑ¿´«Ã½ World Service Archive
This programme was restored as part of the World Service archive project
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Science In Action
The ÃÛÑ¿´«Ã½ brings you all the week's science news.