Following the Irish last general election, the strained arithmetic of a three-way coalition between Fine Gael, Fianna Fáil and the Green Party meant Richard Bruton lost out on a cabinet seat, despite being broadly recognised as having led an energetic reform agenda at the Department of the Environment over his term in office. His Climate Action Plan represented a sea change in Irish climate policy, and will serve as the framework for Irish climate action in years to come. In this episode, Richard gives his five degrees of change for a greener world.