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Energy efficient Google search - Generates 7g of CO2
D' Technology Weblog — ... difficulty, but for the average query, the servers it touches each work on it for just a few thousandths of a second. Together with other work performed before your search even starts (such as building the search index) this amounts to 0.0003 kWh of energy per search, or 1 kJ. For comparison, the average adult needs about 8000 kJ a day of energy from food, so a Google search uses just about the same amount of energy that your body burns in ten seconds.[…] Full Article ...

Google searches causing global warming? Err... no.
Tech Digest — ... creations, and the IT industry has a carbon footprint like any other industry, Google pales into nothing when compared to cars, fossil fuel power stations and the aviation industry. I suspect that the real reason for this jab at one of the world's biggest IT companies is simply a desire for more research funding, particularly since the article inexplicably ends with an utterly unrelated jab at celebrity Twitterers. Google's Senior VP of Operations, Urs Hölzle, clears things up on the Official Google Blog. ...

Research claims single Google Search emits 7g of CO2, Google rubbishes it
Tech Ticker — ... competing against each other. It may even be sent to servers thousands of miles apart. Google’s infrastructure sends you data from whichever produces the answer fastest. The system minimizes delays but raises energy consumption.” Now a twist to the claim is that Google refutes it. In a blog post by Google’s Operations VP says that the “number is *many* times too high”. An average Google query takes just 0.2 grams of CO2. Via Timesonline|GoogleBlog] Advertisement: Samsung Hub ...

Researcher Claims Two Google Searches Produces Same CO2 as Boiling Tea Water [Energy Conservation]
Lifehacker — ... for a (really) detailed explanation. UPDATE : As noted by commenters, Google has responded to the Times' article with a firm denial , claiming that, from their own math: In terms of greenhouse gases, one Google search is equivalent to about 0.2 grams of CO2. The current EU standard for tailpipe emissions calls for 140 grams of CO2 per kilometer driven, but most cars don't reach that level yet. Thus, the average car driven for one kilometer (0.6 miles for those in the U.S.) produces as many greenhouse gases as a thousand Google searches. So, if you regularly drink stove-boiled ...

Google Searches Most Likely Not Destroying World
OhGizmo! — ... aren’t great for the environment. But just about everything short of planting a tree isn’t great for the environment… The important thing is to be generally aware of the impact of your lifestyle, and try to mitigate things where possible. And sometimes services like Google can help you with that, by enabling you to locate information faster and more efficiently. So, don’t freak out, and click here. You’ll feel a little better. [ Google Blog ] VIA [ Wired ] ...