From the Washington Post, Sunday, January 11, 2009; 11:30 AM
TechCrunch.com

Jason Kincaid has written a brief description of relative carbon costs of common activities in comparison with a search using the Google search engine.
It serves as a reponse to Alex Wissner Gross, in the Times of London, where he proposes that a Google search produces 7 grams of carbon, whereas Google says only .2 grams