Remember the power mesh that claims to be able to convert nitrogen into oxygen and able to improve power for the car?
Well, I think it may actually work afterall.
http://en.wikipedia.org/wiki/Nuclear_transmutation
I was checking out on nuclear transmutation and it is possible to convert N2 into O2 by bombarding N2 with alpha particles.
They claimed alot about thorium technology blah blah blah..... Actually Thorium itself is a radioactive element that will undergo decay. Hence it will emit alpha particles. Hence, it will easily convert N2 into O2 isotope.
As for how effective it is I don't know. But at least it is a feasible idea.