Guardian: Every now and again, it's good to remind yourself of the scale of the challenge posed by climate change. Leaving aside the small matter of the rest of the world, the UK has committed to reducing its own carbon emissions by 80% in just over 35 years. This will require an unprecedented reversal of a universal trend among industrialised nations: that as economies grow, so do carbon emissions.
Although reversing this trend will involve many different transformations, underpinning it all is human culture...