The true value of oil

It’s a battle over hearts and minds. And oil. Bush urged Congress to vote to on allowing oil drilling off American coastal waters, prompting spars over what’s causing fuel prices to rise. Democrats say it’s speculators. Republicans say it’s all about demand. Guest: Lisa Margonelli, author of “Oil On the Brain: Petroleum’s Long Strange Trip to Your Tank.” Margonelli writes about the global culture and economy of energy.