In the Guardian opinion section Ben Tarnoff, a founding editor of Logic magazine, zeroes in on an overlooked source of carbon emissions: the massive server farms of companies like Google and Amazon. As Tarnoff observes, these server farms are set to increase their emissions in the coming years as computers invade every area of our lives – from our public spaces to our domestic environments – to harvest and process enormous amounts of data about us. In the face of this chilling prospect, Tarnof...