Pope Francis remained in critical condition Monday but showed slight improvement and resumed some work activities

The eyes of the Catholic world are focused on Agostino Gemelli Hospital in Rome, where Pope Francis remains hospitalized for a number of health issues. Here's what to know about the Pope's health situation—and what experts think it says about the risks of respiratory infections in older people.

Time-honored rituals, drafted and refined over centuries, allow for ritual mourning and provide order at a dramatic moment of transition.