Open Source Sustainability

I understand the motivation for proprietary software companies to operate sustainably and the top down management that can enforce this, but does anyone have any idea how the open source community is thinking of tackling sustainablity? I can see how it could be implemented naturally via a code weight and speed angle. I've not googled this, so feel free to state the obvious.

I was excited to read on Zotero's home page a headline 'building a sustainable Zotero project' but it was talking about economic sustainability :)

Government targets... anyone find them hard to make sense of?

Anyone get the feeling that all the different targets reductions that get bandied about are very confusing?

I thought I'd got comfortable with the 15% reduction on 1990 levels of CO2 by 2020 for the UK, of which the electricity sector will contribute 20% renewables to. That and the long term target of 60% by 2050, later increased to 80%.

Now I'm confused, because in the article in the link I've provided (and in others that appear from googling), the targets for electricity in the UK are announced as 30% renewables and a further 10% from nuclear. Granted, these are quite recent (the announcement from Ed Miliband as far as I gather was made around July '09), but I haven't heard these new targets quoted in any more recent paper or indeed in our MSc lectures. Was this perhaps only an aspiration and not a legally binding target, or something else?

Clarity and politics don't mix, one can only conclude.