In 2015, Dr. Mona Hanna brought national attention to the corroding water pipes in Flint, Michigan, and linked them to children with lead poisoning. Now she's tackling poverty one baby at a time. Mark Strassmann reports.
In 2015, Dr. Mona Hanna brought national attention to the corroding water pipes in Flint, Michigan, and linked them to children with lead poisoning. Now she's tackling poverty one baby at a time. Mark Strassmann reports.