than reflecting changes in pollution abatement technology. We find some evidence for positive spillover effects on …

pollution abatement technologies between target and acquiring parent company. Overall, we do not find environmental benefits …

We use worldwide satellite data to analyse how population size and density affect urban pollution. We find that density … significantly increases pollution exposure. Looking only at urban areas, we find that population size affects exposure more than … itself. We analyse heterogeneity by geography and income levels. By and large, the influence of population on pollution is …