Find a news article online posted within the last month that discusses a potential positive or negative externality. Provide the link and summarize key points. Use concepts, terminology, and frameworks such as public good, social benefits, social rate of return. For example, you may want to address what externality this regulation is attempting to address. Is it a positive or negative externality? What is the current policy being used? Is there an alternative policy approach that may work better/worse (taxes or subsidies, for example), and why? How effective does the current policy appear to be working?