Supply & Demand
For interest:
Minimum wages aren't always so bad, and have some good aspects.
Things the iPhone crushed. (New York Times, September 12, 2017)
We've been messing with taxis for a long, long time
Did the higher minimum wage in Seattle cost jobs? (Vox, June 27, 2017)
When does a higher minimum wage start to cause problems? Alan Krueger, The New York Times, October 9, 2015
Minimum Wages around the world (Tim Taylor, May 29, 2013)
Demand and supply for oil
Demand curves slope down (soda)
On the hunt for the elusive upward sloping demand curve
Politicians say some truly stupid things. "The free enterprise system is absolutely too important to be left to the voluntary action of the marketplace." - Richard Kelly, Republican Congressman from Florida, 1979, shortly before he was nailed for taking bribes
For amusement:
Calvin & Hobbs on the market for lemonade
The power of the demand curve...for evil! (Saturday Morning Breakfast Cereal)
Supply & Demand in Hell (Saturday Morning Breakfast Cereal)
The Economics Genie (Saturday Morning Breakfast Cereal)