The ocean will play a key role in efforts to tackle the climate crisis, according to scientists and the Intergovernmental Panel on Climate Change (IPCC). The use of so-called “negative emissions technologies” to enhance carbon sequestration and storage in the ocean is increasingly being discussed. In a study published in the scientific journal "Frontiers”, RIFS researchers Lina Röschel and Barbara Neumann describe the challenges that these technologies present for both the marine environment and society, and identify cornerstones for their responsible use.