Discuss an externality that you have personally witnessed in the past 12 months.

Discuss an externality that you have personally witnessed in the past 12 months. As best you can, explain and quantify the externality using both the language and tools economists use.Graduate-level suitableTyped 5 double-spaced pages 12PT font, and one-inch margins.
In-case citations with proper references. If you use sources from the Internet, you should include the site addresses in your reference section.