RE: Could better family planning help slow the effects of climate change?
Interesting thing is, that generally (certainly not all) the reason higher educated women tend to have smaller families is not because they are deciding to 'save the environment', but because they are being more distracted from thinking about and doing family creation during their most fertile years - and they tend to have a more developed desire for self-centered meaning in their lives than do mothers of naturally large, two-parent families.
Much more often than not, we run into higher-educated women who wish they had not waited so long to get married and have children... and now they often can't have their own biological children.