Within the next decades unprecedented demographic changes (ageing and population decrease) will impact on most developed and with delay developing nations. The resulting changes in age structure and geographical distribution are expected to cause substantial adjustments. We present an analysis...

The current energy system is largely based on the use of fossil fuels. This poses serious constraints on the actual capacity of the economic systems to comply with two related conditions of sustainability, in terms of pollution and scarcity of natural resources. To examine this issue more...

The current energy system is largely based on the use of fossil fuels. This poses serious constraints on the actual capacity of the economic systems to comply with two related conditions of sustainability, in terms of pollution and scarcity of natural resources. To examine this issue more...