The fact that technologies have unintended consequences is self-evident. But risk management managing the adverse effects of technology is both uncertain and politically contentious, since it entails making decisions about socially important issues in the face of scientific uncertainty. Originating in European environmental policy in the 1970s, the precautionary principle (PP) is embodied in ad...

We solve the general-relativistic steady-state eigenvalue problem of neutrino-driven protoneutron star winds, which immediately follow core-collapse supernova explosions. We provide velocity, density, temperature, and composition profiles and explore the systematics and structures generic to such a wind for a variety of protoneutron star characteristics. Furthermore, we derive the entropy, dyna...

We study collective wind configurations produced by a number of massive stars, and obtain densities and expansion velocities of the stellar wind gas that is to be target, in this model, of hadronic interactions. We study the expected γ-ray emission from these regions, considering in an approximate way the effect of cosmic ray modulation. We compute secondary particle production (electrons from ...

A few decades ago, it was said that the debate on nuclear power had “reached an intensity unprecedented in the history of technology controversies” (Kitschelt 1986). However, the controversy over nuclear power has resurfaced today with a similar gravity. Advocates point to nuclear power as a much-needed energy source in an era of rising demand and the need to curb carbon emission levels, and of...