This paper concerns optimal emissions of greenhouse gases when catastrophic consequences are possible. A numerical model is presented which takes into account both continuous climate-feedback damages as well as the possibility of a catastrophic outcome. The uncertainty in the model concerns...

Im Rückgriff auf die Innovationsforschung wird ein Ansatz für eine gemeinsame Sprache und eine konsistente Systematik für Innovationen im Umweltbereich entwickelt. Dazu werden einige allgemeine Begriffsdefinitionen der Innovationsforschung erläutert, der Begriff Umweltinnovation eingeführt...

Model uncertainty is inherent in the design of optimal environmental policy. We investigate the consequences in a simple linear model, where the aim of the policymaker is to stabilize the carbon content of the atmosphere. We study how decision-makers' concerns about robustness alter policy using...

The topic of this note is issues related to R&D expenditures leading to improved technologies for reducing environmentally harmful emissions. The focus is on he following questions: Will a market economy where environmental policies are restricted to taxes or quotas give the socially efficient...