The controversy over commercial releases of genetically modified crops demonstrates that there is a need for new approaches that are more broadly based, transparent and able to acknowledge the uncertainties involved. This article investigates whether new forms of knowledge production as prescribed in the concept of post-normal science can improve risk governance of GM crops. The GM science review carried out in the UK in 2003 serves as a case study and the focus is on how scientific uncertainty and public (...) concern was taken into account. Some recommendations are advanced for assessing scientific uncertainty, for accommodating scientific disputes and for integrating stakeholders' interests and perspectives in relations to GM crops. (shrink)

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Nanoparticles have multifaceted advantages in drug administration as vaccine delivery and hence hold promises for improving protection of farmed fish against diseases caused by pathogens. However, there are concerns that the benefits associated with distribution of nanoparticles may also be accompanied with risks to the environment and health. The complexity of the natural and social systems involved implies that the information acquired in quantified risk assessments may be inadequate for evidence-based decisions. One controversial strategy for dealing with this kind of (...) uncertainty is the precautionary principle. A few years ago, an UNESCO expert group suggested a new approach for implementation of the principle. Here we compare the UNESCO principle with earlier versions and explore the advantages and disadvantages by employing the UNESCO version to the use of PLGA nanoparticles for delivery of vaccines in aquaculture. Finally, we discuss whether a combined scientific and ethical analysis that involves the concept of responsibility will enable approaches that can provide a supplement to the precautionary principle as basis for decision-making in areas of scientific uncertainty, such as the application of nanoparticles in the vaccination of farmed fish. (shrink)

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In order to investigate the relationship between scientific evidence and social commitments this article addresses three questions: does low dose ionizing radiation cause cancer? Is the answer to this question different in a social setting than in a scientific context? What are the consequences of the answers of 1 and 2 for the relationship between epistemology and ethics as played out in radiation protection? Conceptual analysis with basis in the philosophy of science, in particular traditional theories of causality. Whether low (...) dose ionizing radiation causes cancer deeply depends on what we mean by causality. According to traditional scientific conceptions of causality it is not warranted to say that low dose ionizing radiation causes cancer. Standard approaches in radiation protection, however, imply that there is a causal connection, which is due to the strong social commitment in the field. There is a close relationship between social and scientific conceptions of causality, posing a series of challenges: one being that scientists covertly become moral experts, another one that the general public can be misinformed. There is a difference between causality in science and in policy making. Mixing these conceptions, as sometimes is done in radiation protection, can be misleading. Whether low dose ionizing radiation causes cancer is a social and not only a scientific issue. As such those who are warranted to have a say. (shrink)

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