Which airliner is most green?

[d3athbreak911]

for an environmental project, I need to recommend which airliner is the most green. Any help would be very much appreciated and, of course, help the environment in its own little way. Thanks for any help in advanced ^.^
For those of you who don't know, I mean environmentally friendly...

 

[Grandprixondubs]

I'd say the US army. Alot of their planes are camouflaged and painted green.

 

[Grandprixondubs]

I'd say the US army. Alot of their planes are camouflaged and painted green.