The British Government’s new website on sustainable development is a commendably thoughtful contribution. WorldChanging.com has an interesting commentary:

Behavioral inertia is a tricky thing, but once overcome, large changes can happen at once. They draw an analogy to smoking–in the 1950’s, 70% of Brits smoked, but after a few decades of this four-pronged approach the figure is down to 28% and no-smoking-in-public-places laws are being considered in many locations, which would have been unthinkable just a few years ago.