According to the research from Harvard University, each Google search produces as much carbon dioxide as boiling a kettle of water, which is 7 grams of CO2. With 200 million daily searches on Google, this amounts to 1,400,000 kg of carbon dioxide emitted every day. However, Google claims that each search only produces 0.2 grams of CO2, which would be 40,000 kg daily. A separate study by Gartner found that information technology accounts for about 2% of global emissions currently. It was also previously calculated that worldwide energy savings of 8.3 megawatt hours could be achieved if Google's homepage was black instead of white.