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.
Robert Bryce is author of “Smaller Faster Lighter Denser Cheaper,” and many other books and articles about energy. Coal is denser, contains more energy, and is easier to handle than wood. Oil takes up half as much space as coal and can be transported easily and cheaply by pipeline. Natural gas can be used for many of the same purposes as oil, including terrestrial transportation, power generation, and space heating, but is now cheaper than oil (on a Btu basis). Gas emits about half as much carbon dioxide as coal and creates far fewer air pollutants than either oil or coal. Electricity (which of course must be manufactured from coal, natural gas, oil, uranium or thorium) is extremely flexible, is easily transported via wires, and can be switched on or off with the flick of a switch. Using carbon-based fuels like coal, oil, and natural gas to create cleaner, more ordered forms of energy like electricity provides opportunities to use evermore sophisticated tools, with computers and lasers being prime examples of this trend.
Leon Louw, lawyer, economist, Executive Director of Free Market Foundation in South Africa, Director - Regulatory Affairs for Nuclear Africa (Pty) Ltd and Bonne Posma, physicist, Chairman, Nuclear Africa (Pty) Ltd, Founder, Saminco (USA) specializing in electric propulsion systems for off-road vehicles and underground mining conveyances. The nature and risks of nuclear radiation are widely misunderstood from the most advanced society to the least sophisticated societies. Many view nuclear radiation as they view ghosts and spirits. People who fear what they regard as ominous phenomena generally have difficulty explaining why. This facilitates the promotion by scaremongers of irrational fear. During the era of nuclear weapons testing, radiation fear mushroomed. It endures despite the fact that, for over half a century, 450 water-moderated nuclear power plants delivered millions of terawatt hours of electricity without a single radiation fatality.
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.
Bonne Posma, physicist, Chairman, Nuclear Africa (Pty) Ltd, Founder, Saminco (USA) specializing in electric propulsion systems for off-road vehicles and underground mining conveyances. Comments by John Droz, physicist, Jon Boone, wind energy expert, Eric Jelinski nuclear and wind energy expert: Newly elected leaders in South Africa are changing the energy plan now aiming to use massive amounts of wind and solar energy instead of additional nuclear power. South Africa is unique in the world in having outstanding experience with nuclear power and production of radioisotopes for nuclear medicine. it has some of the world's top experts in nuclear energy. This paper discusses the technical consequences of using wind and solar instead of nuclear. South Africa will squander the expertise they have that can help all of Africa. Political and business lobbying with elected officials will have terrible consequences, when elected officials don't care to understand the technologies they are deciding on.