You need to be logged in to access this resource
"Sustainable development" is a relative term: it is development that moves us from the present state towards a more nearly sustainable state. Thus the base-line is today's technology; the "development" refers to a change in that technology. These notes summarize the layered method for exploring proposed sustainable developments and illustrate its use in a number of worked case studies. The Beneficial Brewing Corporation markets beer in 16 ounce (473 ml) aluminum cans. Their sales average 500 million cans per year, roughly 1% of the US beer market. At the Annual General Meeting (AGM) a group of eco-minded shareholders propose that the company should use steel cans instead of aluminum because steel has a lower embodied energy and carbon footprint than aluminum. The CEO of Beneficial Brewing is thereby presented with an articulation for a sustainable development. How is he or she to assess it?