Is It Prolonging People's Lives?

This week on CNN's "In Depth," Jarrett Bellini tackles the question: Is hygiene prolonging people's lives or not? She says she tried to interview her husband for his opinion, but he was like, just look at the data. He thinks there must be a reason that they're doing it; maybe diseases are killing people in some parts of the world who don't have access to clean water and sanitation projects. The bridge shows how life expectancy has changed from one country to another over time.