COVID-19 Contact Tracing
How to Change the World
Critical Issues in Urban Education
Journalism Skills for Engaged Citizens
Social Work MasterTrack™ Certificate
Supporting children with difficulties in reading and writing
Intellectual Property in the Healthcare Industry
Revolutionary Ideas: Utility, Justice, Equality, Freedom
Propriedade e Responsabilidade Civil: Uma Introdução ao Direito e a Economia
O Futuro do nosso Planeta Terra
Introduction to Environmental Law and Policy
Tempo de se reorganizar! Entenda as organizações, tome iniciativas, e dê sentido ao mundo
O futuro da energia
Gigantes da Internet: Leis e Economia das Plataformas Digitais
Microeconomics: When Markets Fail
The Power of Markets III: Input Markets and Promoting Efficiency
Large Marine Ecosystems: Assessment and Management
Climate Change Mitigation in Developing Countries
Climate Adaptation in Africa
Bitcoin and Cryptocurrency Technologies
Sustainable Tourism – promoting environmental public health
O Poder da Macroeconomia: Princípios da Economia no Mundo Real
Introduction to Economic Theories
Electric Utilities Fundamentals and Future
Master of Public Health
Global Master of Public Health
What is public good?
From the standpoint of economics, in order for goods and services to be classified as public goods, they must be both non-rivalrous, and non-excludable.
Goods and services are considered rivalrous if consumption by one party serves to prevent consumption by another party. Goods and services are considered excludable if they are only accessible to paying parties. Public goods, then, are those goods and services that are available to all, where the supply does not decrease to one party through consumption by another party.
In his landmark 1954 paper, The Pure Theory of Public Expenditure, Paul Samuelson defined collective consumption of good and services as “[goods] which all enjoy in common in the sense that each individual's consumption of such a good leads to no subtractions from any other individual's consumption of that good.”
To help our community keep learning, we’ve made a selection of popular courses completely free through July 31, 2020. This means that, in addition to getting access to lectures and quizzes, you can now earn a valuable certificate upon completion.
To get started, click one of the following links to find a free course—your free discount will be applied at checkout: Public Health | Career Development | Mental Health and Well-Being | Cloud Technology | For High School Students | For College Students | Courses in Spanish