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This article discusses the prices of crude oil and what makes them change. Kent also talks about the current stability of crude oil prices and something called the "Ratcheting Effect". This article is very interesting because it pertains to very recent events and also vaguely to the oil spill by BP in the Gulf. Although it does contain some bias in certain aspects, some of the statements are very general and unbiased.

This article provides an interesting perspective into the fluctuation in price levels between different domestic routes in the US. As demand for a particular route goes up, so does price of airfare that serves that route. As a result, an increasing number of airlines allocate resources to serve that route, and as a result of competitive pressure, prices go down. This results in volatility of prices, and a constant shift in the allocation of resources based on price levels between routes. For instance, the route between Atlanta (ATL) to Las Vegas (LAS) is said to have 2,472,916 price changes. This reflects upon the popularity of this route for domestic travel within the US.