The ‘co’ in co-production of climate action: Challenging boundaries within and between science, policy and practice

•Disconnection between producers of climate knowledge and users impedes climate action.•Co-production not understood in same way by all those involved.•Co-production should be seen as an essential and inclusive process.•Co-production can include communities of practice better suited for climate action.•Boundary agency enables better understanding of roles, perspectives and motivations.