Overlapping climate policies can interact in undesired ways. This paper is the first to employ an event study to investigate the interaction of national coal phase-outs and the European emissions trading system (EU ETS) by empirically examining how allowance prices reacted to coal phase-out...

Collusion is when firms coordinate on suppressing competition, and coordination typically requires that firms communicate in some manner. This study conducts experiments to determine what modes of communication are able to produce and sustain collusion and how the efficacy of communication...