ResAnth addresses the interlinked risks of climate change, coastal flooding and erosion, and the UK's historic waste legacy for coastal community and ecosystem resilience. Coastal flooding and erosion will accelerate under climate change. Our past industrialisation has left a pollution legacy of over 1,700 historic coastal landfills and 3,000 hectares of contaminated land also at risk from coastal flooding and/or erosion (CCC 2018; POST 2021). By 2100 the number of people exposed to coastal floods and erosion, and therefore legacy coastal waste, will increase significantly and almost half legacy waste sites are within 100m of environmentally sensitive areas such as protected wetlands or bathing waters (Brand et al. 2018). Many sites are already eroding, releasing pollution, plastics, asbestos and/or medical waste into our coastal environments with limited understanding of pollution risk to people or the marine environment. Without intervention one in 10 could erode by 2055. Many UK coastal landfills are at increasing future risk e.g., at Lyme Regis, the Spittles Lane landfill contains 50,000 tonnes of waste on an eroding cliff top and will "almost certainly erode" releasing material to the beach without intervention (Nichols et al. 2020). How we manage the intergenerational burden of our past coastal waste disposal and its accelerated risk to society and ecosystems in a changing climate is a "burning imperative" (Environment Agency 2022). In a "call to arms", coastal Local Authorities have identified the enormity of this problem with almost 50% reporting waste sites eroding, or 'at risk'. Yet we do not have sufficient evidence to: 1) build robust business cases to manage (by defending, remediating or 'letting alone') these sites; 2) inform sustainable coastal management decision-making (Shoreline Management Plans) that takes account of the presence of waste; and 3) engage and support those communities who will live with these decisions. Working in 3 'at-risk' UK geographic areas we will: Investigate the risk of waste and pollution release under more severe flooding and coastal erosion scenarios. Assess the harm this pollution will do to coastal environments and adjacent communities. Increase collaboration between a range of stakeholders to understand the different kinds of environmental and social challenges involved. Facilitate inclusive debate on future efforts to manage these risks using established methods and arts-based activities to reach new audiences. Work with communities and policy makers to explore and co-develop policy options and practical actions that will build resilience, and identify potential co-benefits for people and place. Ensure the project's approach, methods and key findings for coastal resilience measures can be scaled across the UK. Assessing the range of risks associated with coastal waste release and building an inclusive and practical 'toolkit' of responses will benefit: 1) organisations who manage the coast, conserve and protect people and habitats; and 2) landowners and communities who use and appreciate the coastal environment for its amenities and cultural value. We have designed a novel 'Community Atlas' to share information, conclusions, and arts outputs with these groups, and that allows citizens to upload their own information and stories about coastal change. ResAnth has been co-conceived with our Project Partners through collaboration, in particular, with; 1) Environment Agency, local authorities, and coastal partnerships to identify research needs; 2) the Climate Change Committee and Policy Connect to understand policy gaps; and 3) engagement with communities through arts-science initiatives.

Establish a transdisciplinary and cross-sector Community of Practice to share knowledge and best practice and unlock better-informed and improved resilience actions; Co-design researcher, community and practitioner training and guidance to improve partnership working and nurture the next generation of resilience champions; Use a needs-led approach to identify and respond to priority needs using the Flexible Fund to deliver small projects and secondments; Collate key insights, case studies and resources for policymakers and practitioners through a web platform, policy briefs and foresight documents; and Build ongoing practitioner and community-led evaluation and reflection to shape future learning, legacy and funding opportunities. Our activities will be complemented by four projects funded under the main call. These will be integrated within the N+, where we will work to amplify their significance and reach by providing a network for knowledge exchange, support for new collaborative initiatives, and to share findings with local, national and international stakeholders. The novelty of programme lies in our transdisciplinary team, innovative needs-led approach, and long-standing experience working on questions about place, scale and the exchange of knowledge across distinctive social, economic and environmental contexts. Crucially, all our activities are co-created with community stakeholders, policymakers, and UK coastal and marine management sectors, responding to their needs, existing knowledge assets and lived experiences to deliver robust policy impacts and toolkits with application to communities and places worldwide. Alongside co-designed events, workshops, secondments and training, our co-created outputs will include: Digital Engagement Platform; toolkits and cases studies; two foresight documents; two solution-focused reports; high-impact scholarly articles; and evaluation reports. In doing this, COAST-R will pioneer transdisciplinary, place-based and whole-systems approaches for better understanding coastal change, enhancing coastal and marine literacy, and building community resilience in precarious coastal places.