Solar radiation management (SRM), a form of climate engineering, would offset the effects of increased greenhouse gas concentrations by reducing the amount of sunlight absorbed by the Earth. To encourage support for SRM research, advocates argue that SRM may someday be needed to reduce the risks from climate change. This paper examines the implications of two moral constraints—the Doctrine of Doing and Allowing, and the Doctrine of Double Effect—on this argument for SRM and SRM research. The Doctrine of Doing and (...) Allowing, and perhaps the Doctrine of Double Effect, shows that the argument is weaker than it appears. (shrink)

Conceptual and methodological changes in ecology have the potential to alter significantly the way we view the world. A result of embracing a dynamic model has been to make ecological restoration projects a viable alternative, whereas under 'equilibrium ecology' restoration was considered destructive interference. The logic of sustainability strategies within the context of dynamic forces promises a greater compatibility with anthropogenic activity. Unhappily, environmental restoration turns out to be paradoxical under the current identification of wilderness with wildness where wildness is, (...) at least, a necessary condition for the possession of natural value. The solution to the paradox is to separate wilderness from wildness both conceptually and ontologically by enlarging the domain of wildness to include certain human activities. (shrink)