When we think about climate change, the main sources of carbon emissions that come to mind for most of us are heavy industries like petroleum, mining and transportation.
Rarely do we point the finger at computer technologies.
In fact, many experts view the cyber-world of information and computer technologies (ICT) as our potential savior, replacing many of our physical activities with a lower-carbon virtual alternative.
That is not what our study, recently published in the Journal of Cleaner Production, suggests.
Having conducted a meticulous and fairly exhaustive inventory of the contribution of ICT — including devices like PCs, laptops, monitors, smartphones and tablets, and infrastructure like data centers and communication networks — we found that the relative contribution of ICT to the total global footprint is expected to grow from about one per cent in 2007 to 3.5 per cent by 2020 and reaching 14 per cent by 2040.