Subsidy — In economics, a subsidy (also known as a subvention) is a form of financial assistance paid to a business or economic sector. A subsidy can be used to support businesses that might otherwise fail, or to encourage activities that would otherwise… … Wikipedia
Pigovian tax — A Pigovian tax (also spelled Pigouvian tax) is a tax levied to correct the negative externalities of a market activity. Pigovian taxes are named after economist Arthur Pigou (1877 1959), who also developed the concept of economic externalities.… … Wikipedia
Economics of global warming — This article describes the economics of global warming and climate change. Contents 1 Definitions 2 Climate change science 3 Scenarios 4 Trends and projections … Wikipedia
Nonpoint source water pollution regulations in the United States — Nonpoint source (NPS) water pollution regulations are environmental regulations that restrict or limit water pollution from diffuse or nonpoint effluent sources such as polluted runoff from agricultural areas in a river catchments or wind borne… … Wikipedia