Dr Stephen Mudge FRSC developed the world’s first degree in environmental forensics during his 20 years in academia. While at Bangor University, he routinely used biomarkers and isotopes as indicators of the source of organic matter in samples. He later worked for a US environmental consultancy and worked on several high profile cases including the Deepwater Horizon response and follow-up. He now works independently conducting environmental investigations in to the source and provenance of contaminants and raw materials. He is a member of the CEN TC276, a Fellow of the Royal Society of Chemistry and Chairs the International Network of Environmental Forensics.