A very thought provoking documentary from the BBC on the carbon impact that the cloud is having on the environment. I for one in my personal and professional life have literally moved most of my information/data onto the cloud, believing that i am reducing my carbon footprint by not needing or using paper, pens, external hard-drives, cables, printers and other electronic paraphernalia. But seems all I may have done is to shift my carbon footprint to an invisible carbon generating activity in server rooms around the world. According to various sources the "cloud" now accounts for 2.7% of of all global greenhouse gas emissions, thereby exceeding emissions from commercial flights.
https://www.intertek.com/carbonzero/