The ecological case for ebooks

Should you be getting an e-reader for the planet's sake? I'd always thought not, but a new study has made me think again
The recent announcement that Foyles are soon to launch the bebook is further proof (as if any were needed) that the e-reader bandwagon is well and truly rolling. News that the New York Times book review will soon be available in e-reader format, meanwhile, also points the way to an increasingly interesting future for what we used to know as the "print industry".
The ability to buy something I wouldn't be able to get in a better format elsewhere (so long as the UK remains starved of the glory of the Sunday NYT delivery) even makes me think I might possibly find a use for an e-reader. Up until now, they've struck me as less pleasant than books, far more problematic in terms of copyright theft and – at least for personal use – rather decadent. They're a big computer that can only read books and so, I've always assumed, a waste of resources. But a bit of research has led me to question even that assumption.
I've only managed to find one report – on the Kindle (by The Cleantech Group) – but it backs up suggestions that so long as e-readers are used as book replacements rather than supplements, they soon start to pay back in carbon terms. The report states that a book uses up "approximately 7.46 kilograms of CO2 over its lifetime" and that the Kindle produces "roughly 168 kg" during its lifecycle, making it "a clear winner against the potential savings: 1,074 kg of CO2 if replacing three books a month for four years; and up to 26,098 kg of CO2 when used to the fullest capacity of the Kindle."
There are still problems. Crucially, the report states: "Amazon declined to provide information about its manufacturing process or carbon footprint" – so we're still really dealing with educated guesswork. I was also curious about whether the report has taken into account the role of books as "carbon sinks". My theory was that books last a long time before they are destroyed – often longer than their source trees ... And even when they aren't furnishing rooms they have a useful second life under the floor of motorways and similar.
When I contacted the author of the report, senior research analyst Emma Ritch, she said: "While some of the carbon stored in the forest will remain stored in paper, the majority will be emitted into the atmosphere. There is a significant amount of carbon stored in the soil, the roots of harvested trees, the usable saplings and other understory vegetation. These release massive amounts of carbon into the atmosphere when they decay, or when they are burned as energy sources for the pulp mill."
So it seems I'm – literally – barking up the wrong tree. Even wood sourced from sustainable forests uses a lot of energy (not to mention water) when it is being processed, and yet more when transported afterwards. (Books are heavy, after all.) Ritch also made the point that textbooks are often updated – and so become obsolete – every couple of years, showing another clear advantage to ebook readers. There are also plusses for academics ploughing through multiple journals and probably even for professional book reviewers.
However, I parted company with Ritch's positive view of e-readers when she suggested a further advantage: "the consumer who purchases an ebook often has the rights to use it on five or more devices, meaning multiple users within a household would not have to purchase multiple physical versions of a book." I'd actually view that as a problem, as far as fiction goes. Five or more devices probably gives the ebook a lifespan of little more than 10 years if my experience with such machines is anything to go by – and that's if you don't share it. A book (so long as it stays together) can be shared with hundreds of people over hundreds of years.
I also have concerns about the supply side. There's no information available about the energy required to run Amazon's "whispernet" and it's hard to work out the amount involved in supplying other books for download. The internet is too often thought of as a cost-free resource in carbon terms – but it's recently been suggested that Google alone produces as much as some nation states. Ritch suggested a good comparison would be that "a physical book purchased by a person driving to the bookstore creates twice the emissions of a book purchased online." But of course, that depends on someone driving rather than walking to the shop.
Nevertheless, I'm part-way convinced. There are clear advantages to using e-readers in schools and academe. At home, I'm less sure – especially when you factor in side-issues such as the toxicity of the heavy metals used in ebook readers and their batteries. I also hesitate because the devices are so new we still know little about how they're used.
Here, I'm hoping an informal survey here might shed more light. So tell me: if you own an e-reader, how often do you use it? (Have you for instance topped off the 22.5 books The Cleantech Group require to break even with traditional books in carbon terms?) Are you buying fewer books? How long does your battery last? Have you had to replace it? Do these carbon savings seem realistic to you? And has that influenced your decision to buy one?
I'd also be curious to know if other ebook agnostics are likely to be converted by the idea that they could be more environmentally friendly. I know it makes me waver. But then again, won't an iPad be more useful? Even if that does mean my reading could be interrupted by emails … And you can't throw the thing across the room when whatever you're reading gets too annoying …