COP26 needs to address air quality as well as climate change
…ecast to breach emission ceiling thresholds for PM2.5 and ammonia (NH3) for 2020 and 2030. Adopting low-carbon farming practices, e.g. reducing animal stock numbers and fertiliser use, and improving waste management on farms could help to achieve those targets as well as reduce particulate matter in urban areas and also nitrogen deposition to vulnerable ecosystems. Unfortunately, the development of biogas/biomethane production from anaerobic diges…