Zeppelins five times longer than the Empire State Building could someday fly cargo over the ocean
There might be a future for hydrogen airships -- but will the world be willing to give them a second ...
Tag: airship
Gigantic Chinese airship flies on solar power for 6 months at a time
The Yuanmeng (which means “dream”) isn't a work in progress - it's actually flying, taking off for the first time ...