It is known that cities are the engines of growth of the modern economy and society. Herewith we highlight the national and regional characteristics of urbanization as a global process. Somewhere the urbanization is stimulated, in China for example, somewhere it is limited, as we see in Russia....

This paper studies health effects from restricting the access of high-emission vehicles to innercities by implementing low emission zones. For identification, we exploit variation in the timing and the spatial distribution of the introduction of new low emission zones across cities in Germany....