1. Find an article that identifies a change in supply or a change in demand. Use the article to fulfill the following instructions and questions:
   1. Copy and paste the article into your homework assignment. Be sure and cite your reference for the article. Indicate the source, author, title, date, and page for the article you have chosen.
   2. W rite a short summary addressing the following items: a. What shift occurred in either supply or demand and in which direction would the supply or demand have shifted. b. What factor changed that caused the shift. Describe the changes in the factor that have occurred. c. Indicate evidence in the article of whether the market is an international, national, regional, or local market.
2. Explain what an externality is and then give an example. How can government correct a negative externality? How can government encourage a positive externality?