We'd need a new kind of plane, because I don't think it's particularly practical to ask the entire world to give up on air travel, especially as so much of the global South is, for the very first time, able to afford it.
Necesitaríamos un nuevo tipo de avión, porque no creo que sea  especialmente práctico pedir al mundo entero que renuncie a los viajes aéreos, sobre todo porque  gran parte del Sur global es, por primera vez capaz de pagarlo.