At the initial stage of this project, the project group consisted of Asbjørn Aaheim, Magnus Hatlebakk and the authors. The authors are grateful for the discussion with the other project participants at this stage. We also had very useful discussion with the marine researcher Sigurd Tjelmeland...

With regard to globalor regional environmental problems, do countries that take unilateral actions inspire other countries to curtail emissions? In this paper this possibility is investigated by the use of a novel design of a laboratory public bad experiment with a leader. Twelve groups of five...

At the initial stage of this project, the project group consisted of Asbjørn Aaheim, Magnus Hatlebakk and the authors. The authors are grateful for the discussion with the other project participants at this stage. We also had very useful discussion with the marine researcher Sigurd Tjelmeland...