The Horizon 2020 Work Programme for 2018-2020 targets climate action, environmental sustainability, and resource efficiency, aligning with the Paris Agreement and the UN's Sustainable Development Goals. It emphasizes the need for innovative solutions and a circular economy to address climate change, resource depletion, and urban challenges, while promoting resilience and sustainability. The programme is structured around two main calls focused on building a low-carbon future and greening the economy, highlighting various research actions and priorities related to climate, water, and raw materials.