The airship could be on the way back. Tomorrow’s fuel could be delivered at all-but zero carbon cost by the ultimate in high-technology supertankers: vast dirigibles, sailing round the world at stratospheric heights on the jet stream. Enormous balloons or airships more than two kilometres in length, laden with hydrogen and an additional burden of cargo could, according to new calculations, circumnavigate the northern hemisphere in 16 days. They could, on route, deliver their heavy goods, and at the same time transfer 60% or even 80% of their hydrogen in gas form. And then, the holds empty, the same airship could float back home in the same direction on the jet stream with the remaining hydrogen to provide the necessary lift, for another trip.
Climate News Network 7th Aug 2019 read more »