Consider this question that seems like a riddle: What is the difference between demand and quantity demanded? They sound like two sides of the same question, but they're actually different – and ...

The law of supply and demand is a fundamental principle of economics theory that describes the relationship between supplier output, consumer demand and price. The demand curve is represented by a ...

Wow. It’s not often a chart can say so much about human behavior, economic theory, oil consumption and maybe even the future of energy all in one spreadsheet column. For one thing, the data I show ...