 The impacts of a nuclear accident are possibly worse in terms of their mental health, economic and social impacts than the direct impacts of radiation. I was involved in the UN Chernobyl forum report and I was involved in the environment part of that report. The health section of the report, the main conclusion, the mental health impact of Chernobyl is the largest public health problem unleashed by the accident to date. I believe that's true. Because radiation holds such fear for people, because it's very difficult to get across information about radiation, what people's individual risk is, the fear, the dislocation of people from their homes, their inability to return to their homes causes enormous social and psychological impacts in itself. Already, this is a recent nature editorial, fall out of fear. I put this guy on my lectures, he's called Grigory Mamonen. We were doing a lot of work on a contaminated lake in Belarus, it was an evacuated area. We were studying the fish to see how contaminated they were to see if there were any radiation effects on the fish. He was there with his fishing rod catching the fish for his tea. He'd refused to move from the evacuated area. He said, I'm not going to move from my house, I'm going to live the way I want to live. He was growing all his own vegetables in the contaminated soil. He took his water from a well. I have to say he's dead now, but he lived to 75, which in Belarus, this was in the 1990s, in Belarus at the time, life expectancy in men was down to 60, not because of radiation, but because of alcoholism, smoking, poor diet, unemployment. All these factors have a much bigger impact. I think we thought he was mad, but thinking more about it, I think he made the right decision. A lot of risk is about how we perceive it, whether we think it's going to bother us or whether we're just going to get on with our lives and not worry about it. Y Llywodraeth Cymru