The workshop was focused on what we have learnt from studies of the effects of radiation on the environment in the Chernobyl Exclusion Zone (CEZ) and what questions still remain. It will included presentations giving an overview of results from those groups which have studied the environment with the CEZ and also those currently working there. An evaluation of studies conducted in Japan following the Fukushima accident was also be given. There were a number of discussion sessions on topics such as How do we resolve the anomalies between field and laboratory studies?, Implications of Chernobyl (and Fukushima) studies for current benchmark dose rates; What next for field studies in Chernobyl?, Each of these sessions will have one or two introductory presentations to set the scene for subsequent discussions. Report from the workshop can be found here.