Climate adaptation and climate protection are among the most important challenges of our time and have therefore become a major policy responsibility. The same applies to protecting biodiversity and ensuring the availability of water. Nature-based solutions (NBS) can play an essential role in addressing these challenges, as they are multifunctional and can generate high synergy effects. But what exactly are NBS, what do they have to do with climate adaptation, and can they be implemented? Sandra Naumann, Senior Fellow at Ecologic Institute, answered these questions in an interview with adelphi. The interview was published in the fifth issue of the Center for Climate Adaptation's Newsletter.