Spiegel: SPIEGEL: Mr. Gabriel, when you became Germany’s environment minister in 2005, you were described as an “environmental black box.” Is there any light in the box today? Gabriel: It was nonsense back then, because I began my career as an environmental politician in the state parliament in Lower Saxony, where I was dealing with the problems of heavy metal contamination in the part of the northern Harz Mountains where I come from, as well as in the Harz National Park. However, I have a low …