“Leave enough for everyone.” That’s what my mother used to tell us at dinner. However, the holiday season reminds me that human nature is far from innately moderate in consumption. With Black Friday as a kickoff, consumers will spend more than $600 billion by Christmas in the United States alone. As I witness droves of shoppers running through malls and stores, I wonder if their desire is driven by some insatiable appetite for their favorite products or something more fundamental about human nature.

“Humanity is altering Earth’s life support system. Carbon dioxide emissions are accelerating; greenhouse gas levels are unprecedented in human history,” says a new video summarizing some of the most striking finds of the Intergovernmental Panel on Climate Change’s latest report. The climate system is changing rapidly, and it is “extremely likely,” the video quotes the IPCC, that humans are the central reason why.

I’ve just returned from the International Conference on Family Planning (ICFP) in Ethiopia where integrated population, health, and environment (PHE) programs had a strong showing. More than 16 sessions over three days at the conference incorporated PHE themes, including panels on communicating complexity around family planning, conservation and human rights; how PHE helps accelerate the fertility transition in rural Ethiopia; and meaningful ways of linking population and family planning to climate change and sustainable development in Africa. Blue Ventures, one of PHE’s strongest voices, was given one of the first ever Excellence in Leadership for Family Planning awards. At this global meeting of family planning experts, PHE was clearly and squarely at the center.

This year’s International Conference on Family Planning (ICFP) happened to coincide with the UN’s annual climate change summit. Perhaps it’s apt then that one of the organizations recognized for excellence is helping to bridge the gap between the environment and family planning communities.

“Gorillas are very good at family planning; if we were like them, we’d be much better off,” said wildlife veterinarian Dr. Gladys Kalema-Zikusoka at the Wilson Center on September 26. The Conservation Through Public Health (CTPH) CEO and founder is celebrating 10 years of population, health, and environment (PHE) work in Uganda and the Democratic Republic of Congo, bringing health and livelihood interventions to people while protecting mountain gorillas around Virunga and Bwindi Impenetrable National Parks. [Video Below]

“The size and growth of the human population is putting unprecedented pressure on natural resources,” reports the first major publication by the Global Partnership for Oceans. The World Bank launched the consortium of more than 140 government, NGO, and private sector groups at the Rio+20 UN Conference on Sustainable Development as a means to bring targeted investment to reverse ocean health decline and encourage sustainable development. On October 16, the Partnership’s Blue Ribbon Panel released Indispensable Ocean: Aligning Ocean Health and Human Well-Being, which encourages members to prioritize five principles: sustainable livelihoods, social equity, and food security; a healthy ocean; effective governance systems; long-term viability; and capacity building and innovation. Selection criteria for investments accompany each principle, including requirements like addressing problems of food affordability and access, demonstrating potential for improvements in human health, and building resilience to future conditions. “The good news is that we stand at a point in history where it is neither too late nor impossible to turn the tide of change that is currently sweeping across the ocean,” panel chair Ove Hoegh-Guldberg concludes.