<<More work on birth contorl in the developing world coiuld also be part of the solution>>
Have you noticed how family size is on the increase in Britain? In the 70s the aspirational size of a family was 2 children and the average was 2.4. I don't know the current figures, so it's just an impression but many young families now have 3 children or more, and 3 seems to be the aspirational size. So is our population rising? In which case we should be addressing our own birth control. Which of course brings us back to immigration/emigration ratios as another way to control our population size - all of which is impinging on the rights of the individual, a moral dilemma. My personal view is that in the interests of humanity as a whole, we may have to reduce the rights of the individual when it comes to matters which affect us all.
As several people have commented in this thread, we as a nation need - in fact have to reduce our energy consumption to fit in with what we can produce. We use far far more energy in many ways than we did even twenty years ago, and so much of it is wasted or unnecessary - this is where we need to do more work, by a mix of legislation, education and pricing, to reduce our energy greed.