Climate Change Scenarios — Purpose and Construction -- Economic Scenarios for Global Change -- Climate Change: Regulating the Unknown -- Curbing the Omnipresence of Lead in the European Environment Since the 1970s — a Successful Example of Efficient Environmental Policy -- Mission Impossible? Media Coverage of Scientific Findings -- Fishing for Sustainable Policies — Political Causes of Over-fishing and Solutions for Sustainable Fisheries -- Oil Pollution in Marine Ecosystems — Policy, Fate, Effects and Response.