We use the synthetic control method to analyze the effect of face masks on the spread of Covid-19 in Germany. Our identification approach exploits regional variation in the point in time when face masks became compulsory. Depending on the region we analyse, we find that face masks reduced the...

While wind power is considered key in the transition towards net zero, there are concerns about adverse health impacts on nearby residents. Based on precise geographical coordinates, we link a representative longitudinal household panel to all wind turbines in Germany and exploit their staggered...

Although there is strong support for renewable energy plants, they are often met with local resistance. We quantify the externalities of renewable energy plants using wellbeing data. We focus on the example of biogas, one of the most frequently deployed technologies besides wind and solar. To...