governments establish the optimal city size when production processes involve environmental pollution. Our analysis delivers two … key insights. First, if an optimal scheme to regulate environmental pollution is implemented, cities chosen by local … governments are never too large. They are too small if pollution is purely global, but at the optimal size, if pollution is purely …

, environmental regulation, productivity, and consumer preferences have contributed to these reductions in pollution emissions. We … estimate the model's key parameters using administrative data on plant-level production and pollution decisions. We then … pollution changes. Finally, we compare the model-driven decomposition to a statistical decomposition. The model and data suggest …

rates. Using the World Input-Output Database (WIOD) we employ the proposed indicators to shed new light on changes in cost …

We study the impact of short-term exposure to ambient air pollution on the spread and severity of COVID-19 in Germany … patients (80+ years): higher levels of air pollution by one standard deviation 3 to 12 days after developing symptoms increase … deaths by 30 percent (males) and 35 percent (females) of the mean. In addition, air pollution raises the number of confirmed …