Our expert panel - including Prof. Jeremy Wight (Sheffield's Former Director of Public Health) - Jane Thomas (former senior campaigner with Friends of the Earth UK), Natasha Askaroff (Healthy Planet) and Sarah MacFadyen (British Lung Foundation) - discuss the health risks of air pollution, which is estimated to lead to the premature deaths of 500 people in Sheffield every year, and calculated to cause £160 million in lost working days in the city due to illness. Come along and ask your questions about this invisible threat.