What happens when melting ice reveals buried nuclear waste from a foreign power originally there at the behest of a colonial power? Greenland may find out in the years ahead, according to research by Jeff and William Colgan about a Cold War-era U.S. military base long thought buried beneath an ice cap.

There may not have been a single question about climate change in the 2016 presidential debates, but it remains a hotly contested, partisan issue for many in the United States. That climate change is happening and requires a response is not up for debate within the upper echelons of the U.S. military, however.

The United Nations has made significant progress since the Stockholm Conference of 1972 in putting the environment on the global agenda. Indeed, the environment plays a major role in two of the largest UN initiatives today: the Paris climate accord and the Sustainable Development Goals. But in a new brief for the Friedrich Ebert Stiftung Foundation, Wilson Center Fellow Ken Conca writes that the traditional approach to environmental issues is running up against its limits.

Water wars? Climate conflict? Population pressure? The strains placed by humanity on ecosystems around the world are gaining more and more attention. Policymakers and community leaders are adjusting in countless ways, from fishing villages in the Philippines to the White House in Washington, DC. Last month’s most popular posts tracked these stories from a number of angles.

Yesterday afternoon President Obama announced a new Presidential Memorandum on climate change and national security. The policy directs 20 federal agencies to consider the national security implications of climate change and establish a working group that will develop a Climate Change and National Security Action Plan for the federal government.

In 2007, a teenaged Australian became the first documented case of “climate delusion” when he was hospitalized for dehydration after refusing to drink out of fear of contributing to the nation’s drought. Carley Chavara’s story on “climate trauma” was the most-read last month after being linked to by NPR.

What is just was the subject of our top three most popular stories last month on New Security Beat. From climate policy to gender inequality, many governments and NGOs are grappling with how to address marginalization and other systemic problems through interventions that also address environment or health issues. As the Sustainable Development Goals encourage such integrated thinking – by rich and poor countries – these kinds of considerations are likely here to stay.