The overarching scientific goal of NORA is to understand the biochemistry and ecophysiology that underpins N2O emissions, improve the assessment of the emissions and to find mitigation options. This was reached through the integration of detailed biochemical approaches, microbiology and physiology studies of relevant organisms (model organisms and newly isolated strains), microbial ecology of complex systems (soils and wastewaters), field emission studies and advanced technological development. Here you can read about the research and the main results that we obtained, detailed for the three scientific work packages (WP1, 2 and 3).