It's hard to function in modern life without the 'cloud'. Our everyday tasks are increasingly digital, supported by tools and services that are based on some remote server farm. The cloud, after all, is just someone else's computer (or server).

Now it's certainly the case that the cloud helps enable a fairly low-carbon footprint, allowing people to accomplish a lot without burning fuel to get anywhere, like working from home or navigating more efficiently to avoid traffic jams. At the same time, it's easy to forget that the cloud has its own carbon footprint, left by data centers buzzing with digital activity.

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