John Fagan was an early voice in the scientific debate on genetically modified (GM) crops. His current work focuses on sustainability, security, and safety in the global food system. He has pioneered the development of tools to verify these parameters, including methods to detect GM organisms in food, the first certification programme for non-GM foods, and a leading certification programme for sustainability and ethics in the food and agricultural industries. He holds a PhD in biochemistry and molecular biology from Cornell University, USA. He has conducted research at the US National Institutes of Health and elsewhere, which has been published in leading scientific journals. He speaks internationally in industry, government, scientific, and public venues.