The IPAT-model developed by Ehrlich and Holdren is widespread in ecological economics in order to quantify the impact of population growth on environmental deterioration. We comment on this model and extensions proposed by several authors from a theoretical and empirical point of view.

How does global aging affect the convergence in global economic development? Both the developing and developed world will be characterized for the coming decades by aging populations. Changes in the age distribution of a population are an important determinant of economic performance as they...

Der vorliegende Beitrag untersucht acht Zentren des Umlandes der Stadtregion Hamburg als städtische Raumstrukturen, in denen sich eine Reurbanisierung gegenüber dem flächenhaften Umland abspielen kann. Basierend auf kleinräumigen Bevölkerungs- und Wanderungsdaten der amtlichen Statistik...

R&D-based growth theory suggests that a larger population size raises either the long-run rate of economic growth (strong scale effect) or the level of per capita income (weak scale effect), with far-reaching policy implications. However, for modern times there is little empirical support for...

This paper analyzes the impact of urbanization on CO2 emissions in developing countries, taking into account the presence of heterogeneity in the sample of countries and testing for the stability of the estimated elasticities over time. The sample covers the period from 1975 through 2003 for...

R&D-based growth theory suggests that a larger population size raises either the long-run rate of economic growth (strong scale effect) or the level of per capita income (weak scale effect), with far-reaching policy implications. However, for modern times there is little empirical support for...

Since World War II, mortality has declined in the developing world. This paper examines the effects of this mortality decline on demographic and economic growth by a family-optimization model, in which fertility is endogenous and wealth yields utility through its status. The decline in mortality...

The paper develops an integrated baseline model to assess the trade-offs be- tween the natural environment and economic growth. Consumption growth is considered under welfare and sustainability aspects. The framework features capital accumulation and the sectoral structure of the economy as key...

This paper proposes a new analytical framework with which to analyze the determinants of global CO2 emissions. It contributes to the existing literature by examining the determinants of CO2 emissions using a flexible functional form (transcendental logarithmic model), taking into account the...

The IPAT-model developed by Ehrlich and Holdren is widespread in ecological economics in order to quantify the impact of population growth on environmental deterioration. We comment on this model and extensions proposed by several authors from a theoretical and empirical point of view.