two news articles that discuss demand, supply, and equilibrium price of two substitute products, like beef and chicken; butter and margarine. It can be two articles that discuss both products, or one article about one product and another article about another product. -At least one news article should be dated within the previous two months -Demand for one product: Quantity demanded, Determinants of demand, Shifts in demand curve, etc. -Demand for another product: Quantity demanded, Determinants of demand, Shifts in demand curve, etc. -Supply for one product Quantity supplied, Determinants of supply, Shifts in supply curve, etc. -Supply for another product Quantity supplied, Determinants of supply, Shifts in supply curve, etc. -Changes in equilibrium quantity and equilibrium price for one product -Changes in equilibrium quantity and equilibrium price for another product