Wonkblog: How the nation's largest health insurer is fighting high drug prices

You don't have to look far these days to find stories about the rising costs of prescription drugs. By one count, drug spending jumped 13 percent last year, the highest annual increase in more than a decade. And health insurers have spent the better part of the past year warning anyone who'll listen that the new medications will come with high price tags that will strain the health-care system's ability to afford such medical advances.