Flying is the most damaging mode of transportation for our climate. However, work is already underway to investigate technical alternatives to conventional aircraft. For example, airships with highly efficient solar cells and extremely light batteries on board. Prof. Dr. Christoph Pflaum from FAU, together with Prof. Dr. Agnes Jocher from the Technical University of Munich (TUM) and the FAU student Tim Riffelmacher, have investigated which route a solar airship would have to take in order to fly from London to New York as quickly and as climate-friendly as possible.