”How Green, how soon?" This is the question I tried to sort out in my latest contribution to National Geographic Magazine about the aviation industryʼs state of affairs. Last spring I embarked on a long journey throughout Europe to visit some of the leading institutions in the field and get to know howʼs the current condition of the transportation sector. Whatʼs in store is an impressive bunch of visionary projects, which are still quite far to be seen actually realized in mass public transport. “Aviation can go green, but not soon and no comprehensively as ground-bound transport.

Credit: National Geographic