Tom swift and his electric airship

摘要

Sooner or later, the practices we call “green” will have to expand from the token gestures we make today (turning down the thermostat and driving hybrids) to a nearly universal avoidance of oxidizing fossil carbon. In terms of aviation, it''s time to start thinking about how to move people and goods, in commercial quantities, with a zero-carbon footprint; indeed there are several schemes afoot.