Contents: Changing lifestyle: desires and opportunities. - User rationality and sustainable consumption. - Do people choose to be environmentally friendly? - New style of life - for life. Obstacles to and possibilities for behavioural change and maintenance. - Daily travel: trends, limits, susceptibility to influence. The living environment, ecology and daily life: a study of two eco-villages. - Green teams: a way for individuals to live an ecological sustainable life in a dialogue with friends and local authorities. - Trade and industry can make a contribution. - The industrial challenge. - Wanting to do what one ought to do: notes on environmental change and human behaviour. - Environmental research and the problematic concept of lifestyle. - Science, views of man and influencing behaviour. - Morally robust decisions. - Inertia, lifestyle and the environment. - Lifestyle - a useful concept in environmental research? Remarks in the light of the general development of the human sciences.