Could future flights be powered by thin air?

Imagine boarding a flight from Seattle to London powered by fuel created — quite literally — from thin air. It sounds like science fiction, but research labs are working on making it happen — so far on a very small scale.

​ Imagine boarding a flight from Seattle to London powered by fuel created — quite literally — from thin air. It sounds like science fiction, but research labs are working on making it happen — so far on a very small scale. Read More Breaking News, Latest News and Videos | CNN