Flint was once one of the richest cities in the United States. But in the 1980s, it was badly affected by the downturn in car manufacturing and by 2014 it was nearly bankrupt. To save money, the city switched its water supply away from Lake Huron to its own Flint River, but state officials failed to treat the river water properly. As a result lead, a powerful neurotoxin, was released into the drinking water.

Despite mounting evidence, officials denied anything was wrong and it took them a year and a half to switch water supply back to Lake Huron. But many residents of Flint –a majority African-American city with high rates of poverty– have been left fearful about the long term impacts on their children.

Rob Walker speaks to lifelong Flint resident Jeneyah McDonald who had two young children at the time. He also hears from Dr Mona Hanna-Attisha – a paediatrician and professor of public health– who helped bring the scandal to national attention after showing that lead had found its way into the bloodstreams of the city’s children.

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more.

Recent episodes explore everything from football in Brazil, the history of the ‘Indian Titanic’ and the invention of air fryers, to Public Enemy’s Fight The Power, subway art and the political crisis in Georgia. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: visionary architect Antoni Gaudi and the design of the Sagrada Familia; Michael Jordan and his bespoke Nike trainers; Princess Diana at the Taj Mahal; and Görel Hanser, manager of legendary Swedish pop band Abba on the influence they’ve had on the music industry. You can learn all about fascinating and surprising stories, such as the time an Iraqi journalist hurled his shoes at the President of the United States in protest of America’s occupation of Iraq; the creation of the Hollywood commercial that changed advertising forever; and the ascent of the first Aboriginal MP.

(Photo: Bottled water donations to help with the Flint Michigan water crisis in 2016. Credit: Dennis Pajot via Getty Images)