The European Commission outlined various approaches to capture and store or isolate carbon dioxide emissions, or capture already released carbon dioxide directly from the atmosphere to reduce the concentration and thereby its warming effect. Various solutions, both technology- and nature-based, are being brought forward to this end. A key challenge will be to ensure permanence of carbon dioxide removals, whether in underground geological storage or through actively managed natural processes, such as carbon farming and management practices in the land use, land-use change and forestry sectors.