Credit: Environmental Modelling & Software (2025). DOI: 10.1016/j.envsoft.2025.106823 A new study by the University of Portsmouth shows that plastic items make up more than seven in ten pieces of litter recorded across the UK, with countryside locations and public recreation areas carrying some of the heaviest burdens. The research draws on ten years of citizen science data collected between 2015 and 2024, using artificial intelligence to bring together in