The Catholic Church has a real problem on its hands. Pope Benedict XVI's sudden resignation, effective Feb. 28, means the Vatican will need to find a replacement. But Catholicism is facing two major challenges on two very different fronts. The Vatican may face a dilemma in whether it can select a new pope who can face both equally, or who would privilege one over the other.

Those two challenges, as the Canadian journalist Doug Saunders explains in this helpful and quick video, are (1) Catholicism's struggles in the "rich" developed world, where secularism is on the rise and a child abuse scandal has troubled the church, and; (2) the growth of Catholicism in the developing world, particularly Latin America and Africa, where followers might have different needs than do middle-class Westerners.

We'll have more on this later so do check back.