Rolling Stone's credibility faces scrutiny

Through decades of digging into the private lives of rock stars and providing a forum for colorful writers like Hunter S. Thompson and P.J. O'Rourke, Rolling Stone magazine Publisher Jann Wenner has never been afraid to push boundaries.

Now Wenner, who founded the magazine as a 20-year-old college dropout, is weathering the stiffest test of Rolling Stone's credibility that the magazine has faced in its 48-year history.

On Sunday, the magazine retracted a November article alleging sexual assault at the University of Virginia, just ahead of the release of a damning Columbia University report about its reporting and editing. And on Monday, a fraternity named in the story threatened a lawsuit.