Our Changing World – Lead bullets and their risk to human health

Humanity has had a long and vexed relationship with the element lead. The problem is the stuff is terribly useful – and terribly toxic. Think Roman water pipes, lead paint, lead petrol. Now, new research is adding to a global body of work showing that there are more downsides to using lead in ammunition than we previously realised. Our Changing World’s Alison Ballance is in Nelson to find out more.