Governments could slow global warming dramatically, and buy time to avert disastrous climate change, by slashing emissions of one of humanity's most familiar pollutants – soot – according to Nasa scientists. A study by the space agency shows that cutting down on the pollutant, which has so far been largely ignored by climate scientists, can have an immediate cooling effect – and prevent hundreds of thousands of deaths from air pollution at the same time.
At the beginning of the make-or-break year in international attempts to negotiate a treaty to replace the Kyoto Protocol, the soot removal proposal – which is being taken seriously by experts close to the Obama administration – offers hope of a rapid new way of tackling global warming. Governments have long experience in acting against soot.
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