

How are climate change and environmental degradation affecting human migration across borders and within countries? We explore with top experts in this Migration Policy Institute podcast.
Episodes

Jul 31, 2026
Jul 31, 2026
31 min
Fiji has long been at the forefront of developing policies to help its residents voluntarily relocate to escape the extreme effects of climate change. The country, which is comprised of hundreds of islands in the Pacific, faces rising sea levels, extreme weather, and other dangers.
But for many Fijians, the choice to pack up and leave home is a difficult one. Many have a deep spiritual and personal connection to place, a concept known as vanua. Meanwhile, as one of the largest economies in the region, Fiji is also a destination for migrants from other Pacific Island countries, including those threatened by climate change.
How has the government tried to support people who move? What considerations do residents consider when deciding whether to relocate? And what is the response to immigration from other countries?
On this episode, we discuss these issues with Sargam Goundar, a Fijian doctoral researcher at the University of Otago.
Chapters
01:41 Climate Impacts Unfolding in Fiji
04:54 Government-Led Planned Relocation Framework
08:17 The Concept of Vanua: Cultural Ties to Land
13:10 Community Concerns and Decision-Making Around Relocation
16:44 Fiji as a Regional Migration Destination
22:16 Policy Gaps and Research Priorities

Jun 30, 2026
Jun 30, 2026
28 min
The coordinated global response to climate change-driven displacement is relatively new. Just a few decades ago, virtually no governments were paying attention to the ways in which people were being displaced by extreme weather, sea-level rise, and other climate events. Although the international response remains a work in progress, significant strides have been made to bring the world together.
One of the people responsible for that coordination is Walter Kälin, a longtime humanitarian expert and legal scholar who is now the Envoy of the Chair of the Platform on Disaster Displacement, a country-led initiative that works to protect people at risk of climate-related displacement. In this discussion, he breaks down where things stand today in terms of a coordinated response and how things might evolve in the future.
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Chapters
01:15 Evolution of Global Displacement Policy
06:45 Climate Change Enters the Displacement Agenda (2004–2010)
10:28 The Nansen Initiative and the Birth of the Platform on Disaster Displacement
17:55 Lessons Learned: Bottom-Up Over Top-Down Approaches
19:58 Navigating Declining Funding and Political Fragmentation
24:30 Advice for the Next Generation

May 26, 2026
May 26, 2026
34 min
Climate change can be devastating for individuals’ health and safety. Climate-linked natural disasters can cause physical injuries and damage health-care systems, while slow-onset changes such sea-level rise can lead to the spread of disease and make it harder for people to obtain care.
In that context, leaving a climate-vulnerable place can potentially lead to better health outcomes—but only under the right circumstances.
In this episode, we speak with Ilse Ruyssen, an economist at Ghent University and the UN University Institute on Comparative Regional Integration Studies, who leads the CliMigHealth research network.
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Chapters
01:19 Health Vulnerability among Climate Migrants
05:13 Groups at Highest Risk
08:36 When Migration Protects Health
11:51 How Climate Change Directly Harms Health
17:02 Strain on Health-Care Systems
22:18 Countering the "Migrants as Health Risk" Narrative
25:48 Mental Health and Climate Displacement
27:48 What to Do?

Apr 23, 2026
Apr 23, 2026
31 min
Climate change is making home insurance more expensive and less available, as the multibillion-dollar losses caused by hurricanes, wildfires, and other disasters increase in scale. Rising insurance premiums can push some people to relocate or force others to either pay more money to remain in their home or go without insurance and risk catastrophe if disaster strikes. Residents, insurance companies, and policymakers in high-income countries are beginning to reckon with these issues and are working to find a way to adequately offset risk without charging exorbitant prices. This episode features Talley Burley, who analyzes climate risk and insurance at the Environmental Defense Fund.
Subscribe to Changing Climate, Changing Migration on Apple, Spotify or YouTube.
Chapters
02:17 How Climate Change Is Raising Insurance Costs
06:04 Hazards Driving Insurability Concerns
07:38 Insurance Costs as a Driver of Migration
09:49 Climate Entrapment and Equity Issues
15:13 Policy Solutions: Adaptation, Building Codes and Wraparound Services
18:52 The National Flood Insurance Program: Origins and Trade-offs
26:00 Hurricane Sandy: Lessons in Recovery and Relocation

Apr 9, 2026
Apr 9, 2026
30 min
Refugees are often some of the people most vulnerable to climate change. After fleeing armed conflict or persecution, many refugees end up in camps located in rural areas, with few resources and little support. That can leave them vulnerable to floods, storms, extreme heat, or other impacts of climate change.
This episode focuses on these impacts, with insights from Ayoo Irene Hellen, a South Sudanese refugee in Uganda and climate advocate. She discusses her own experiences, those of her community, and the value of including refugee voices in planning.
Want to dive deeper? Listen to an earlier episode speaking with the UN refugee agency’s special advisor on climate action: https://mpichangingclimatechangingmigration.podbean.com/e/no-climate-refugees-but-still-a-role-for-the-un-refugee-agency/
All of MPI’s work on climate migration is here: https://www.migrationpolicy.org/topics/climate-change
00:00 Intro
02:45 Climate impacts on refugee settlements in Uganda
09:32 Legal and socioeconomic barriers to climate adaptation
16:52 Exclusion of refugees from climate policy processes
19:21 Refugee-led community resilience strategies
23:11 Climate challenges upon return: The case of South Sudan
27:24 Closing thoughts: co-creation and refugee inclusion

Feb 23, 2026
Feb 23, 2026
24 min
Many Indigenous people have a deep connection to their ancestral homelands that dates back centuries. What happens when climate change and other factors force them to move away from those lands? This episode discusses issues affecting Indigenous people, especially in the Americas. Our guest is environmental scientist Jessica Hernandez, a climate justice and Indigenous advocate. She discusses the factors compelling migration for Indigenous communities, their experiences after migration and the dearth of Indigenous voices in policy discussions over climate change and migration.

Jan 26, 2026
Jan 26, 2026
39 min
Africa may be the most climate-vulnerable region of the world, with drought, extreme heat and storms, and other impacts affecting millions across the continent. These environmental events have forced people from their homes and in some cases even contributed to conflict between different groups. By far, most climate-affected individuals who migrate stay either within their own country or go elsewhere on the continent, rather than migrating beyond Africa.
How prepared is the continent for a future of increased displacement? Governments are making some strides to accommodate displaced people—although there is often a gap between official rhetoric and the realities on the ground. This episode discusses climate-linked migration issues across Africa with Aimée-Noël Mbiyozo, a senior research consultant at the South Africa-based Institute for Security Studies.

Dec 16, 2025
Dec 16, 2025
30 min
It is not guaranteed that someone harmed by a natural disaster or other environmental change will leave their home. A complicated web of factors affects whether climate-vulnerable individuals want to—or even can—move. One of these factors is financial: How much money or other resources someone has at their disposal.
In this episode, we speak with Kelsea Best of The Ohio State University about climate (im)mobility and the economic and other factors that help shape futures amid changing climates. We also discuss the notion of “climate gentrification,” which occurs when wealthier people move into traditionally lower-income neighborhoods that are better shielded from natural disasters and other environmental harms.

Nov 10, 2025
Nov 10, 2025
27 min
Children are especially vulnerable to displacement linked to climate change. Each year, millions of young people are displaced by weather-related disasters, as schools and other services break down and adults send children away to find safety. Forced from their homes, children often face new challenges, including being unable to access education or medical care, and even heightened risk of violence and other dangers. Despite the unique challenges that children face in displacement, there are relatively few international laws or systems particularly designed to assist those forced to move because of environmental factors. We speak with UNICEF’s Laura Healy about this reality and the opportunities to better protect children in a warming world.

Oct 29, 2025
Oct 29, 2025
27 min
Within the next few decades, rising sea levels could wipe some small Pacific Island nations off the face of the earth. The prospect that the physical territory of countries such as Kiribati and Tuvalu is no longer habitable raises the prospect that their nationals could lose their citizenship, becoming stateless. It also poses profound questions for international law and the obligations of other countries.
How likely is this possible outcome, and what can countries do to protect their sovereignty and their citizens? Join our discussion with Mark Nevitt, an international law scholar at the Emory University School of Law.