We are too many

Sciam examines relationships between environmental degradation and population. Still haven't digested it all. This looks like the punchline:

Population and Sustainability: Can We Avoid Limiting the Number of People?: Scientific American:

"...the evidence suggests that what women want—and have always wanted—is not so much to have more children as to have more for a smaller number of children they can reliably raise to healthy adulthood. Women left to their own devices, contraceptive or otherwise, would collectively ‘control’ population while acting on their own intentions."