@DynamoKev
What can we actually do?
Anything effective enough to make a difference basically means shutting down vast amounts of economic activities.
Well unfortunately that's the crux.
We'll all have to consume much much less than we do. Our economy is built on people consuming more and more and more (not just food, but clothing, holidays, gadgets, cars etc etc).
Unfortunately people aren't willing to give up luxuries and will continue to have more children than is necessary.
Moving to a sustainable way of life will require wholesale restructuring of our society, which won't be pretty or fun. So people won't do it. Unfortunately the alternative is wholesale destruction of human (and other) habitat.