In an oligopoly market subject to environmental regulation through tradable pollution permits, polluters' output … decisions affect the price of polluting. With a pollution tax, this feedback effect is absent. In a permit regime, I show that … implications of oligopoly behavior in the Pennsylvania, New Jersey, and Maryland electricity market. Air pollution fell …

suggests that exposure to pollution can cause respiratory illness and increase deaths among the elderly, little is known about … whether increases in pollution could cause additional or more severe infections from COVID-19, which typically manifests as a … respiratory infection. Using variation in pollution induced by a rollback of enforcement of environmental regulations by the …