In Episode 3 of Century Lives Season 4: A Lifetime of Inequality, we go to Phoenix, Arizona, to understand how it is that the built environment can have great consequences for lifelong health and longevity. We focus our story on trees, which are abundant in wealthy North Phoenix, and almost completely absent in South Phoenix—instead replaced by concrete, warehouses, railroads, highways, and the like. In Episode 3, we discuss how climate change is only exacerbating the situation, and how the consequences affect predominantly poverty-level Black and Latino people.