What do melting Himalayan glaciers have to do with food security in Cambodia? Not much, thought an aid practitioner trying to boost food security along the lower reaches of the Mekong River – until she heard a colleague working on the Tibetan Plateau describe the downstream implications of climate change in the Himalayas. Everything she was working on, she suddenly realized, could be literally washed away.

“What’s become clear to me on population is that it’s really a local issue,” said Andrew Revkin in an interview at the Wilson Center. “You get the impression, ‘Oh didn’t we solve that problem?’” And to some extent, demographic shifts around the world are largely heading in the direction people anticipated, with a leveling off mid-century. But “no one really knows what happens then,” he said. “All it takes is a tiny diversion of fertility rates and things could really grow or shrink.”

The original version of this article appeared on the Aspen Institute blog.

When journalist Alan Weisman proposed a new book on the challenges posed by human population growth, his editor said, “That one’s a live wire; don’t touch it.”

When Super Typhoon Haiyan ripped through the Philippines last month, the incredible damage visited on the people, infrastructure, and land was shaped by trends that have been in motion for decades. The country’s population has been growing rapidly, with high concentrations of people living in cities and along the coast; economic growth had been steady, but weak governance and corruption may have exacerbated vulnerability; and the gradual loss of coastal forests and mangroves left many communities exposed to the full brunt of the typhoon’s storm surge. On a positive note, wireless technology and crowd-sourced data helped in disaster response.

Last month, more than 10,000 negotiators from 189 countries attended the latest UN climate change conference, known as the 19^th Conference of the Parties, or COP-19, this year held in Warsaw. To many, COP-19 fell frustratingly short of its already low expectations: there were no significant new agreements and 132 developing countries along with many major non-government groups staged a walkout in protest. However, it was notable for several signs of continued progress in bringing women’s voices to the negotiating table.

The original version of this article, by Laura Robson and Caroline Savitzky, appeared on Blue Ventures’ Beyond Conservation blog.

The excitement was palpable as we gathered with almost 200 of the world’s finest population-health-environment (PHE) practitioners, researchers, and advocates in Addis Ababa for the International PHE Conference earlier last month! With all of us working on integrated projects encompassing family planning, community health, sustainable livelihoods, and environmental initiatives, there were many ideas and progress updates to be shared.

Super Typhoon Haiyan left the central Philippines in ruins, with a staggering death toll that could climb well above 10,000. The U.S. military is leading the international response to the devastation, along with international aid agencies. The Pentagon has dispatched an aircraft carrier and five other Navy ships, plus a separate group of at least 90 marines and specially trained humanitarian relief teams to the area.

As their five-year funding cycle for supporting integrated population, health, and environment (PHE) programs around the world came to a close this fall, leaders from BALANCED Project – Building Actors and Leaders for Advancing Community Excellence in Development – came together at the Wilson Center to discuss lessons learned, best practices, and new ideas for the future.