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We use worldwide gridded satellite data to analyse how population size and density affect urban PM 2. 5 pollution. We find that more populated and denser grid cells are more exposed to pollution. However, across urban areas, exposure increases with cities' population size but decreases with density. Moreover, the population effect is driven mostly by population commuting to core cities rather than the core city population itself. We analyse heterogeneity by geography and income levels. A counterfactual simulation shows that PM 2. 5 exposure could fall by up to 40% if population size were equalized across all cities within countries, but the relocation of population from large to small cities that maximizes welfare would be small. [ABSTRACT FROM AUTHOR]

Is urbanization good for the environment? This paper establishes a simple core–periphery model with monocentric cities, which comprises key forces that shape the structure and interrelation of cities to study the impact of the urban evolution on the environment. We focus on global warming and the potential of unfettered market forces to economize on emissions. The model parameters are chosen to match the dichotomy between average "large" and "small" cities in the urban geography of the United States, and the sectoral greenhouse gas emissions recorded for the United States. Based on numerical analyzes we find that a forced switch to a system with equally sized cities reduces total emissions. Second, any city driver which pronounces the asymmetry between the core and the periphery drives up emissions in the total city system, too, and the endogenous adjustment of the urban system accounts for the bulk of the change in emissions. Third, none of the city drivers gives rise to an urban environmental Kuznets curve according to our numerical simulations. Finally, the welfare‐maximizing allocation tends to involve dispersion of cities and the more so the higher is the marginal damage from pollution. [ABSTRACT FROM AUTHOR]

Abstract: This paper analyzes the relationship between spatial mobility and social mobility. It develops a two‐skill‐type spatial equilibrium model of two regions with location preferences where each region consists of an urban area that is home to workplaces and residences and an exclusively residential suburban area. The paper demonstrates that relative regional social mobility is negatively correlated with segregation and inequality. In the model, segregation, income inequality, and social mobility are driven by differences between urban and residential areas in commuting cost differences between high‐skilled and low‐skilled workers, and also by the magnitude of taste heterogeneity. [ABSTRACT FROM AUTHOR]

This paper studies the effect of cultural attitudes on childcare provision, fertility, female labour supply and the gender wage gap. Cross-country data show that fertility, female labour force participation and childcare provision are positively correlated with each other, while the gender wage gap seems to be negatively correlated with these variables. The paper presents a model with endogenous fertility, female labour supply and childcare choices driven by cultural attitudes which fits these facts. There may exist multiple equilibria: one with zero childcare provision, low fertility and female labour supply and high wage gap and one with high childcare provision, high fertility and female labour supply and low wage gap. [ABSTRACT FROM AUTHOR]

Abstract: We analyse preferences for public, private or mixed provision of childcare theoretically and empirically. We model childcare as a publicly provided private good. Richer households should prefer private provision to either pure public or mixed provision. If public provision redistributes from rich to poor, the rich should favour mixed over pure public provision, but if public provision redistributes from poor to rich, the rich and poor might favour mixed provision while the middle class favour public provision (‘ends against the middle’). Using estimates for household preferences from survey data, we find no support for the ends-against-the-middle result. [Copyright &y& Elsevier]

This paper analyzes voting on a linear income tax whose proceeds are redistributed lump sum to the taxpayers. Individuals can evade taxes, which leads to penalties if evasion is detected. Since preferences satisfy neither single peakedness nor single crossing, a voting equilibrium may not exist. When an equilibrium does exist, there are several possible outcomes. There may be ‘conventional’ equilibria where the rich are expropriated by the poor and middle class. There may be equilibria without full expropriation where redistribution is limited by the threat of evasion. Finally, there may be equilibria where redistribution goes from the middle class to the rich and poor. [ABSTRACT FROM AUTHOR]

This paper examines social agglomeration externalities. Using survey data from the German Socioeconomic Panel, it examines the link between city size and different measures of consumption, social interaction and social capital. There is strong evidence of agglomeration effects in consumption, while positive effects of city size on social interaction and social capital variables seem to some extent to be driven by sorting. Further, using responses to satisfaction questions, the paper analyses whether individuals are compensated for diseconomies of agglomeration by positive agglomeration externalities in other areas. This hypothesis cannot be rejected. [ABSTRACT FROM AUTHOR]

This paper shows that stricter enforcement may increase tax evasion. Individuals vote on a linear income tax, which is used to finance lump sum transfers. Individuals may evade taxes, but they have to pay fines when caught. Stricter enforcement may make redistributive taxation more attractive to the decisive voter. The tax rate and transfer may rise, which in turn may increase tax evasion. The paper also discusses the interaction between voting on taxes and the choice of audit rate by a budget-maximizing bureaucrat. [Copyright &y& Elsevier]