There are a lot of ideas and viewpoints bandied about at conferences, and although the thrust of the discussion, the result has often been huge amounts of leaflets, booklets, flyers and paper, often ending up in the trash. So for COP25, UNFCCC, the Governments of Chile and Spain are working together to make the Conference as sustainable and climate-friendly as possible. This commitment comes on top of the enormous challenges the organizers have been facing with the relocation of such a major event at such short notice.