Why prices rise (by Russell Roberts)

Steve Mufson at the Washington Post is bewitched, bothered, and bewildered about why oil prices keep rising. The headline:Skyrocketing Oil Prices Stump Experts The article begins: Confused about oil prices? So are the experts. Executives from the giant oil companies say it's partly the fault of "speculators" or financial players. Key financial players say it's really a question of limited supply and expanding global demand. Some members of Congress accuse the Organization of the Petroleum Exp