Plot: Five years after the Flint water crisis, there are still long lines for water and new evidence of the long-term health impact on the city’s children, Sharyn Alfonsi reports; produced by Guy Campanile. Leslie Stahl revisits the remarkable story of architect Chris Downey, who lost his sight but found a way to keep working, and believes blindness has made him a better architect; produced by Shari Finkelstein