Presentation [extract from the introduction] :
"This work is original in the field of research on lifestyles in that it takes a resolutely forward-looking approach. Thus, the aim was first to identify the key variables of lifestyle changes in France and their impacts on CO2 emissions, whether weak signals revealing new behaviours (co-housing, diet, the local food movement, new mobility practices, voluntary simplicity, etc.) or, more generally, changes in social representations and in ways of living, working and consuming that are not motivated by environmental concerns but may have significant positive or negative effects on energy consumption."