George Monbiot has nailed the hypocrisy of the SNP Government (http://www.guardian.co.uk/environment/georgemonbiot/2009/aug/07/monbiot-scotland-climate-policy)
The truth is that the SNP Government (or should that be all governments?) care more about short term growth than long term commitments - hence the idiotic phrase "sustainable economic growth" that has replaced sustainable development in government speak.
We have to make the transition from growth based on ever increasing resource consumption to development based on making best use of the limited resources we have. It's not easy. But the longer we put it off the harder it will be.