Internet companies tell computer users their data is stored on "The Cloud," and a lot of them worry it might be disturbed by the weather. In reality, "The Cloud" is million of severs in hundreds of warehouse-sized buildings that can use enough electricity to power a medium-sized town. The New York Times has created a furor by raising questions about how much energy is wasted to make so much information available 24/7. What about air pollution? Can the IT industry power unstoppable growth, or will it hit a brick wall?