Keith Baverstock is a physical chemist currently working with a Citizen-Scientist group in Tokyo on the public health follow-up to the Fukushima accident. Former Advisor for the Regional Office for Europe of the World Health Organisation, and then Professor of Public Health and Ionising Radiation at the University of Eastern Finland, he has worked on ionizing radiation and its impact on human health. More recently he has been exploring the biology underlying genomic instability.