Can someone concisely explain how using more data in a general sense is contributing to CO2 emissions? I mean, if I use Bittorrent for example, the data is flowing through ISPs and from users' computers. I imagine the impact is negligible in the grand scheme of things. For hosted service I understand there's some cost to the datacenters used to serve the data, but the processing certainly has much more of an impact.

At the end of the day, the real culprit is the infrastructure, and emergence of tech giants who don't have environmental sustainability anywhere in their mission.