the Polarstern can be found forging her way through the rough seas of the polar regions, using her nearly 20,000-horsepower-strong engines to break through thick ice when necessary. In the process, she consumes [...] significantly cleaner choice. “The Polarstern bunkers the cleanest variant available, DMA, which is nearly as good as the diesel used in commercial trucks,” says Hirsekorn, who served as a container-ship [...] on board. After all, with up to 44 crewmembers and up to 55 researchers and technicians, there are nearly one hundred people on board, all of whom need to take showers and use the toilet. A sophisticated