Sob o tema geral "Soluções inovadoras para desafios ambientais, consumo e produção sustentáveis", foi realizada de 11 a 15 de março de 2019, na sede do Programa das Nações Unidas para o Meio Ambiente, em Nairóbi, Quênia, a 4ª sessão da Assembleia das Nações Unidas para o Meio Ambiente do Programa das Nações Unidas para o Meio Ambiente. A UNEA 4 foi encerrada com 23 resoluções-chave.
Resolution 1: Innovative Pathways to Achieve Sustainable Consumption and Production
Resolution 2: Promoting sustainable practices and innovative solutions for curbing food loss and waste
Resolution 3: Sustainable Mobility
Resolution 4: Addressing environmental challenges through sustainable business practices
Resolution 5: Sustainable Infrastructure
Resolution 6: Marine Plastic Litter and Microplastics
Resolution 7: Environmentally Sound Management of Waste
Resolution 8: Sound Management of Chemicals and Waste
Resolution 9: Addressing Single-use Plastic Products Pollution
Resolution 10: Innovations on biodiversity and land degradation
Resolution 11: Protection of the Marine Environment from Land-Based Activities
Resolution 12: Sustainable Management for Global Health of Mangrove
Resolution 13: Sustainable coral reefs management
Resolution 14: Sustainable Nitrogen Management
Resolution 15: Innovations in Sustainable Rangelands and Pastoralism
Resolution 16: Conservation and Sustainable Management of Peatlands
Resolution 17: Promote gender equality, and the human rights and empowerment of women and girls in environmental governance
Resolution 18: Poverty Environment Nexus
Resolution 19: Mineral resource governance
Resolution 20: Fifth Programme for the Development and Periodic Review of Environmental Law (Montevideo V) "Delivering for People and the Planet"
Resolution 21:Implementation Plan “Towards a Pollution-free Planet”
Resolution 22: Implementation and follow up of UNEA resolutions and related activities