Your annual work email could be adding the same amount of warming carbon dioxide to the atmosphere a flight between London and Bruges. A new online tool estimates the carbon footprint of your email and suggests various strategies for reducing your communicative carbon costs. Email has a carbon footprint because of the power demands to create and run the computers, servers and routers that transmit each message. The average email reportedly adds an extra 4 grams of carbon dioxide into the atmosphere — but this can increase 12 fold in email chains or with big attachments. Office workers on average process over 34,000 emails each year and can spend around 13 hours a week working on their inboxes.  Your annual work email could be adding the same amount of warming carbon dioxide to the atmosphere a flight between London and Bruges, a new online tool suggests (stock image) The environmental cost of each email has been calculated by UK-based IT careers board CWJobs, who have released a free online Email CO2 Calculator (above) that can estimate the environmental impact of your very own emails. The calculator is inspired by, and based on, Mike Berners-Lee’s book ‘How Bad are Bananas?: Th...