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 …

paper investigates the link between nighttime light pollution and economic growth, air pollution, and urban density. We …-level counties. This has implications for policies that have been proposed to curtail nighttime light pollution. …

, military training during peacetime has environmental consequences. This research aims to quantify how much pollution is emitted … pollution levels. Leveraging high-frequency data, we employ a machine learning algorithm in conjunction with program evaluation … area. Our findings reveal that these exercises led to a notable increase in air pollution levels, potentially reaching up …

implementation of stage 1 and 2 LEZs, which banned the most pollution-intensive vehicles from city centers, significantly reduced PM …