Volatile Swings for Price of Oil Hobble Industry

The extreme volatility that has gripped oil markets for the last 18 months has shown no signs of slowing down, with oil prices more than doubling since the beginning of the year despite an exceptionally weak economy.

The instability of oil and gas prices is puzzling government officials and policy analysts, who fear it could jeopardize a global recovery. It is also hobbling businesses and consumers, who are already facing the effects of a stinging recession, as they try in vain to guess where prices will be a year from now
NYTimes