It's the age-old question: Is the glass half empty, or half full? For the people of Flint Michigan, it's far from being a settled issue. Some three years after the city's water crisis first made headlines, many people still don't believe their tap water is safe. Correspondent Martha Teichner talks with Dr. Mona Hanna-Attisha, the whistleblower who alerted Flint residents to the dangers posed by the very water they drank, and to activists who discuss the legacy of the Flint water crisis: A loss of trust.
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