Pope Benedict says his age and poor health are forcing him to step down at the end of this month.
The 85-year-old pope made the surprising announcement today during a meeting of Vatican cardinals.
The pope's brother, Georg Ratzinger, says Benedict is having increasing difficulty walking and had been advised by his doctor not to take any more transatlantic trips -- and he'd been considering stepping down for months.
We'll talk about this development with Don Briel, director of the Center for Catholic Studies at the University of St. Thomas.