On normal days, the temperature decreases with altitude, allowing air pollutants to rise and disperse. During inversion episodes, a warmer air layer at higher altitude traps pollutants close to the ground. We show how readily available NASA satellite data on vertical temperature profiles can be...

This paper presents empirical results on coronavirus fatality rates from cross-country regressions for OECD countries. We include medical, environmental and policy variables in our analysis to explain the death rates when holding case rates constant. We find that the share of the aged...

This paper examines the role of a sulphur dioxide (SO2) emissions quota introduced as part of China's 11th Five-Year Plan on internal movements of high-skilled labour across Chinese prefecture cities. Using data on migration flows calculated through changes in Hukou status, this study suggests...