A one-day symposium organised by the °ÄÃÅÁùºÏ²Ê¿ª½±¼Ç¼'s Environmental Chemistry Group (ECG) and the Environment, Sustainability and Energy Division of the °ÄÃÅÁùºÏ²Ê¿ª½±¼Ç¼, incorporating the 2011 ECG Distinguished Guest Lecture to be given by Prof James Galloway (University of Virginia).