How a scientist went from hero to traitor in a US water crisis - video
When the water in Flint, Michigan, became contaminated with dangerous levels of lead, Dr Siddhartha Roy, then a third year PhD student, was part of the team of scientists who publicly contradicted state and federal claims that it was safe. He became a local hero until a new piece of research challenged the idea that children in Flint had been left permanently brain damaged by the crisis. His…