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              The U.S. Department of Energy will award up to $100 million for projects that remove CO2 from the atmosphere
 
            
            (www.scientificamerican.com)
          
          A community to post scientific articles, news, and civil discussion.
rule #1: be kind
You have a finite amount of resources. Your want to reduce/limit global warming add much as possible. So you need to spend the resources as effective as possible, not in applications that cost 10x as much for the same effect.