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Global warming "techno-fixes," such as erecting a sunscreen in space, are starting to interest climate scientists. Plus, hi-tech architecture booms in Beijing

By Philip Ball   July 2007

Global warming fixes get technical

With climate change forecasts looking increasingly ominous and the international regulation of greenhouse gas emissions all but stalled, there has never been greater interest in geo-engineering: controlling the climate by artificial means. America’s efforts to lever such mitigation strategies into the latest report by the intergovernmental panel on climate change (IPCC) were denounced as an excuse for it to go on conducting its industrial business as usual. But while climate scientists tend to regard these techno-fixes with scepticism, if not outright hostility—the IPCC called them “speculative, uncosted and with potential unknown side-effects” —there does…

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