Learn how externalities impact economics, with examples of positive and negative outcomes, and explore solutions like taxes, ...

Ideally, a nuclear state will strike a balance between positive and negative command and control, such that only an order to release nuclear weapons by the proper authority will result in a launch.

A Facebook post with a picture of a positive control for a COVID-19 test misleadingly describes it as a positive test kit and suggests it may be “preloaded with the virus”.