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HARDtalk: David Keith - Environmental Scientist

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15/11/2011 GMT

David Keith - Environmental Scientist

BBC World Service - HARDtalk, David Keith - Environmental Scientist

Can we combat global warming by altering the way the sea, clouds and atmosphere work?

Geo-engineer Professor David Keith discusses his work combating global warming by altering the way the sea, the clouds and the atmosphere work. A dangerous leap into the unknown?

Few branches of science divide opinion as sharply as that championed by Professor David Keith. 

He's one of the pre-eminent geo-engineers striving to find new ways to combat global warming, by altering the way the sea, the clouds and the atmosphere work. 

This isn't a replacement, he says, for the political drive to reduce emissions. 

But is geo-engineering a cost-effective, emergency stop-gap, before the effects of climate change become irreversible, or a dangerous leap into the unknown?

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