The Worldwatch Institute released in December a special report (Population, Climate Change, and Women’s Lives) that pulls together the latest scientific evidence to show how addressing population could help the world meet the challenge posed by climate change. The report references the earlier Brian O’Neill study, which indicated that slowing population growth could provide 16–29% of the emissions reductions thought to be necessary by 2050 to avoid dangerous climate change. The report recommends a three-part strategy for reducing population growth: expanding family planning, promoting gender equity, and improving educational attainment levels for girls and young women.
http://blog.populationinstitute.org/2010/12/15/population-and-climate-change-looking-beyond-cancun/