We study optimal pollution abatement under a mixed oligopoly game when firms engage in emissions-reducing R&D that is … certain conditions, the optimal pollution tax is positive; otherwise, the tax reverts to a subsidy. Comparing mixed and …

Reactive nitrogen (N) and phosphorus (P) pollution in Germany is mainly caused by production of cattle meat and milk …, which is mostly consumed domestically. This pollution comes at a high external costs not yet addressed by current policies …. We explore scenarios where reduced domestic cattle production aims to lower N and P pollution. We also analyze the …

market outcome exhibits inefficient production and inefficient entry. A policy mix of three popular regulatory instruments-taxation … on polluters, feed-in tariffs for clean entrants, and taxation of consumption-cannot correct these two market failures …