Negative externalities occur when a party's actions have an adverse impact on other individuals or entities. Various types of positive and negative externalities exist in any kind of market ...

Negative Externalities. Negative externalities usually come at a cost to individuals, while positive externalities generally provide a benefit. ...

But this particular case is a happy example of a positive externality. ... some tools can help you minimize the risk of negative externalities and increase the possibility of positive ones.

Positive Externality (Britannica) Externality: What It Means in Economics, With Positive and Negative Examples (Investopedia) Additional Resources. Bell Ringer: Government Approach to Externalities ; ...

A positive externality increases the social benefits of economic activity, so an adjusted demand/benefit curve would lie farther left on the diagram, reflecting a lower social price at each quantity.