of course, helped drive billionaire mogul donald trump to the white house, and it helped propel rick snydernto the governor's mansion in michigan. snyder is a tech ceo who ran as, quote, one tough nerd. in michigan, snyder moved quickly to slash costs from balanced budgets and in the process, he set the stage for one of america's greatest environmental disasters, exposing 100,000 people to lead poisoning in the majority black city of flint, michigan. hardest hit were the children, many who now live with the irreversible effects of contaminated tap water as the government nickel and dimed. my guest, dr. mona hanna-attisha, is the famous flint pediatrician, turned detective, com whistle-blower. she's just written a book about it. it's called "what the eyes don't see kwk a story of resistance and hope in an american city." i asked her what made her step up and take on the system. dr. hanna-attisha, welcome to the program. >> it's great to be here. >> so this has been a story that has roiled your state but also america for a long time, and you were right there on the front line. just describe f