Cheap climate-engineering schemes could get off the ground
<BR><A href='http://www.newscientist.com/blogs/shortsharpscience/2009/01/geoengineering-moves-towards-r.html'>http://www.newscientist.com/blogs/shortsharpscience/2009/01/geoengineering-moves-towards-r.html</a> 
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