5 problems facing hydrogen-powered airplanes

BRUSSELS — The best way to cut greenhouse gas emissions from flying is to fly less — but that's a non-starter for the industry and millions of passengers. Instead, the sector is hunting for a tech fix that would allow airplanes to keep flying while polluting less — and one idea is to use hydrogen. But there are big questions over whether this is a workable solution. Here are five challenges facing hydrogen-powered aviation. 1. Sourcing clean hydrogen won't be easy Hydrogen can be very… (www.politico.eu) More...