The Drax power station in Yorkshire is the UK's biggest CO2 emitter, burns more wood each year than the entire UK timber harvest, and is a major importer of coal from strife-stricken regions of Colombia, writes Frances Howe. This Thursday campaigners will target the company's AGM to highlight its impacts on forests, biodiversity, climate and communities, in the face of Drax's PR offensive to make biomass appear 'sustainable'.