Airline Industry - Wharton on fuel at $60 per barrel and the benefits of hedging

Thanks to Madame BOOT for pointing me towards an article on the Wharton Knowledge website called "For Airlines and Others, Even the Best Fuel-price Bets Can Lead to Turbulence". Article talks about the activities of airlines in hedging against fuel costs. This issues came up again recently with the outrageously deceitful campaign by US airlines against "evil" oil speculators.