Can climate-driven international migration pose a security threat? Former U.S. Homeland Security Secretary Michael Chertoff thinks so, but not necessarily because of the migrants themselves. Irregular migration prompted by climate events can empower smugglers and criminal groups. And it can spur an extremist backlash in receiving countries if people feel their government is not adequately protecting them. Chertoff talks about the security implications of climate change and migration in this episode of the podcast.

Facing the adverse impacts of climate change, many people are better off migrating, whether within their country or internationally, at least for a short time. Yet for a variety of reasons, migration is not always possible. This episode of our podcast focuses on these groups, sometimes known as “trapped populations.” Why do people stay in places where their homes, livelihoods, and their very lives are threatened? We explore these questions with Caroline Zickgraf, deputy director of the Hugo Observatory at the University of Liège in Belgium.

Climate migration sounds simple. It’s not. This episode of the podcast speaks with Lawrence Huang, MPI’s lead researcher on climate change and migration, to answer the most common questions around one of the least understood dynamics in human movement. Read an article on this topic from Lawrence here: "Climate Migration 101: An Explainer."

Humanitarian organizations often race to help people affected by natural disasters. But what if they could act before catastrophes occur to mitigate disaster-induced forced migration? In this episode, we discuss this kind of anticipatory action and how it might reduce chaotic displacement. Our guests are Gana Gantulga and Zeke Simperingham from the International Federation of Red Cross and Red Crescent Societies.

When large numbers of asylum seekers and other migrants arrive at the borders of Western countries without prior authorization to enter, they are often treated as “spontaneous” arrivals. But migration is almost never truly spontaneous. Usually, human mobility across international borders is the result of complicated decision-making and a careful weighing of the costs and benefits. This episode features David Leblang, a professor of politics and public policy at the University of Virginia, who discusses how climate change fits into the migration calculus.

Increasingly, human beings are city dwellers. More than half the global population lives in an urban area, and the rates are increasing. Some new urban residents may be fleeing rural areas vulnerable to the impact of climate change. But are they likely to fare much better in the city when it comes to climate impacts? And are fast-growing cities around the world prepared to confront environmental challenges that come with rising populations? This episode discusses these questions with noted climate expert Neil Adger, a professor of human geography at the University of Exeter.

People displaced by climate change are not eligible for refugee status. But should countries extend any sort of legal protections to them? Our guest, Ama Francis, a climate displacement project strategist with the International Refugee Assistance Project and Columbia Law School’s Sabin Center for Climate Change Law, thinks so. In this episode, we discuss some small ongoing initiatives and what new legal pathways might look like. 

Is the world facing a chaotic century of mass migration spurred by climate change? As the planet’s temperature warms, award-winning environmental journalist Gaia Vince thinks so. In her book, Nomad Century: How Climate Migration Will Reshape Our World, she contemplates a future in which hundreds of millions of people move from one part of the globe to another in a planned and deliberate migration. We discuss her bold solutions for managing what she terms a species emergency in this episode.

Guyana is a small country in South America that undoubtedly will be greatly transformed by the recent discovery of massive offshore oil reserves. Extremely vulnerable to climate change, with predictions that its capital will be underwater by 2030, Guyana has been known as a green champion, trapping more carbon dioxide than emits. How will the world’s fastest growing economy manage environmental change, particularly with economic growth and proximity to troubled Venezuela likely to drive significant immigration? We discuss these dynamics with Camila Idrovo and Jermaine Grant from the Pan American Development Foundation.

Do host communities respond differently to people migrating because of environmental impacts compared to refugees fleeing war or migrants seeking work? Research suggests the answer is yes. Multiple factors affect relations between communities and new arrivals, and migrants’ perceived levels of deservingness can be influenced by the reasons why they move. In this episode, we speak with Sabrina Arias and Christopher Blair about their study of responses to climate migrants in the United States and Germany.