Today: 21.Apr.2021

Malcolm Grimston, Honorary Senior Research Fellow, Imperial College, London: In physical terms Fukushima was a middle-ranking industrial accident of the kind that happens perhaps eight to ten times each year round the world. The response, and especially the irrational prevention of people from returning to their homes in areas where there was hardly any contamination, turned it into a serious human tragedy.

Mohn Doss, Medical Physicist in Diagnostic Imaging: Mohan Doss and Edward Calabrese with life time careers studying low dose radiation and low dose toxins are ignored by this writer for Discover Magazine. Instead he focuses on trying to convince his readers that low dose radiation is dangerous and should not be used or tolerated in modern society. He ignores all the benefits of low dose radiation in diagnostic and therapeutic nuclear medicine and in having affordable and safe nuclear energy. That's what the media so often does. Very unfortunate.

John Dunn, MD, JD: The United States Environmental Protection Agency is charged with identifying and mitigating environmental risks. This article discusses US EPA’s misguided decision to use the Linear-No-Threshold (LNT) cancer risk model as a basis for regulating exposure of the public to ionizing radiation such as is associated with residential radon. The Health Physics Society has stated that reliance on the LNT model “…tends to foment the public’s fear of all types of radiation . . . reliance on the LNT model, especially at very low doses and dose rates, is inappropriate and can exaggerate the risk.” The HPS also condemns “collective” (cumulative) dose as a measure of radiation health risk.

Howard Cork Hayden, Emeritus Physics Professor, University of Connecticut: This article was presented at the ANS - HPS Joint Topical Conference on LNT, Linear No-Threshold Model and Cumulative Dose. It is a straightforward proof that radiation dose is not a cumulative measurement.