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The Harvard physicist who was reported by The Times of London as saying that a search made on Google through a desktop computer generates about 7gm of carbon dioxide has stirred up quite a controversy. Though in his defense Alex Wissner-Gross recently stated that he did not single out Google in his study. Incidentally it seems that his statement was edited by The Times by adding that making two searches on Google can be compared to bringing a tea kettle to boil.

Wissner-Gross stated:

For some reason, in their story on the study, The Times had an ax to grind with Google.

Our work has nothing to do with Google. Our focus was exclusively on the Web overall, and we found that it takes on average about 20 milligrams of CO2 per second to visit a Web site.