Media :
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Last broadcast on Thu, 17 Nov 2011, 02:05 on BBC World Service (see all broadcasts).
Synopsis
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?
Broadcasts
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Wed 16 Nov 201109:05
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Wed 16 Nov 201112:05
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Wed 16 Nov 201116:05
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Wed 16 Nov 201120:05
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Thu 17 Nov 201102:05
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