expedition to the Arctic Ocean. Over the next two months, an international research team will analyse the feedback effects between global warming and sea ice retreat in the Arctic Ocean. How climate change [...] change is altering the Arctic Ocean On 29 May 2025, the Polarstern research vessel set sail from Bremerhaven for the Arctic. The destination is the AWI Hausgarten long-term observatory situated between Svalbard [...] Svalbard and Greenland, where the scientists will investigate how the ecosystems of the Arctic deep sea are reacting to changing environmental conditions as a result of rapid climate change. Polarstern