Millar co-chaired a side event on peatland restoration in the UK pavilion at COP25, for Scottish Government and the Ministry of Environment of Chile. Speakers included CEO of Scottish Natural Heritage, Environment Minister of Chile also President of COP25, peatland ecologist Rebekka Artz of James Hutton Institute, the Climate Change Ambassadors of Chile and of Democratic Republic of Congo, the peatland leads for German Federal Environment Ministry and for Scottish National Heritage.