When oil prices fell sharply, the search for an explanation became almost as big a story as the slide itself. Unexplained fluctuations in markets have begun to reveal the anxiety left behind by 2008's financial crisis.
The president might be able to do little to really bring down short term gas prices. But reporter Scott Tong outlines some things that actually would affect the price.
Halting, or even dislocating, the flow of one-fifth of the world's oil supply could send the price of crude into the stratosphere. But the oil market doesn't appear to take the threat seriously.
