Jon Ronson investigates whether corporate leaders can, in fact, be psychopaths by visiting a former Sunbeam CEO named Al Dunlap. This is an excerpt from Ronson's book, The Psychopath Test.

One more confusing financial product that's bringing down the global economy. And one of way to think about this product is this: If bad mortgages got the financial system sick, this next thing you're about to hear about, helped spread the sickness into an epidemic.