From Engineer to Engineer to Engineer.
You'r right about the point of working as a united humanity on the issue.
But, practically, it has not happened in the last 5.000 years. I would argue it won' happen in the next 50s.
Frankly i don't know where to find a solution. I'm starting thinking we have no chances.
But it's too easy to be discouraged, so let's keep up with what we have now, and push solar as far as we manage to.