In a 2017 study of a rural area of Alabama, more than one in three people tested showed traces of hookworm, an intestinal parasite spread by contact with human feces, previously thought to be eradicated in the U.S. Catherine Coleman Flowers grew up in Alabama, and has spent 20 years calling attention to the problem of people living with no sanitary means of human waste disposal, so it collects in their yards, and sometimes seeps into their homes. Earlier this year, she was awarded a MacArthur fellowship to support her work. Her new book is 'Waste: One Woman's Fight Against America's Dirty Secret.' Also, John Powers reviews the documentary 'Collective,' about a team of journalists investigating the aftermath of a 2015 Bucharest nightclub fire that killed 64 people