Oh Wazza, please don't wish me into a job of mainstream journalism.

Although the paid work would be nice, I'd hate having deadlines. I've tried twice to come back and reply to this discussion, but life whisked me away both times.

But you do raise a relevant point - what MORE can be done?
I reckon we all think this too, and it's part of the reason discussions about over population arise. Consider however, that each and every individual is unique. They have their own contribution to be made and we cannot dictate common knowledge as a general rule of thumb for everyone.
Common knowledge is exactly that - common - there's nothing unqiue about it. No innovation or evolving perception.
People aren't a science project, or a numbers game to be played. You cannot trade in women's ovaries like you would a carbon trading scheme. Common knowledge will tell you everything common about the world. It will never show you what is unique and surprising about it.
What more can be done? It's a very good question. I'm going to get philosophical here and say, how about actually enjoying the process? How about recognising the uniqueness in people's choices, and what's happening to our planet is just part of the whole process.
The planet is as wonderful today as it was 20 years ago. It's just changed - like we have.
If a place is found on the planet for an extra child, or whether there is a space where a child could be - what does it
really matter to me? I don't have control over a great many things in life, but one - my own contentment.
How many people are content with their choices, their planet and their lives today? Maybe that's why we endlessly discuss what we need to fix. We aren't happy with what we already have.