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Changing Climate, Changing Migration

Migration Policy Institute

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.

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S1 · E55
August 28 · 33 min
Precedent or Cautionary Tale? The U.S. Climate-Driven Relocation of Isle de Jean Charles
In 2016, the U.S. federal government provided $48 million to relocate the climate-threatened Louisiana island of Isle de Jean Charles. The effort, which was the government’s first climate-driven community relocation project, was closely watched as a potential model for the future. But the relocation was more challenging than originally anticipated. Many residents who were members of a Native American tribe felt they had been treated unfairly or were excluded from decisionmaking. In the end, some tribal leaders referred to the process as a “cultural genocide.” We speak with Jessica Simms, a cultural geographer who was Louisiana’s lead outreach and engagement coordinator for the resettlement effort. She traces the array of factors behind the decision to relocate and the mix of successes and challenges along the way. If you appreciate this conversation, please subscribe to the podcast and leave us a review. Chapters 01:44 Louisiana's Disappearing Coastline 07:46 Previous Failed Relocation Attempts 09:07 Federal Funding and National Goals 13:50 Miscommunication between Tribes and the State 17:30 Outreach Efforts and Voluntary Relocation 22:02 The Relocation's Legacy
S1 · E54
July 31 · 31 min
Fiji on the Front Lines of Climate Mobility
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
S1 · E53
June 30 · 28 min
How the World Is Learning to Respond Collectively to Climate Displacement
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. Subscribe and please leave us a review on your podcast service of choice. 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
S1 · E52
May 26 · 34 min
Climate Change Is Making People Sick. Can Migration Help?
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. Subscribe to Changing Climate, Changing Migration on Apple, Spotify or YouTube. 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?
S1 · E51
April 23 · 31 min
Priced Out: Climate Change, Home Insurance, and the People Stuck in the Middle
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
S1 · E50
April 9 · 30 min
First Displacement, then Disasters: How Refugees Contend with Climate Change
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
S1 · E49
February 23 · 24 min
Climate Displacement from Indigenous Lands
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.
S1 · E48
January 26 · 39 min
Is Climate-Vulnerable Africa Prepared for Increased Displacement?
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.
S1 · E47
Dec 16, 2025 · 30 min
Trapped by Climate Change: The Economics of Staying or Leaving
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.
S1 · E46
Nov 10, 2025 · 27 min
The Young Lives Uprooted by Climate Change
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.
S1 · E45
Oct 29, 2025 · 27 min
Will Climate Change Push Some People into Statelessness?
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.
S1 · E44
Aug 27, 2025 · 23 min
Connecting the Dots: How Climate Detectives Link Human-Caused Environmental Change to Migration
It is no easy task to say with certainty that a particular storm, drought, or other extreme weather event causes human displacement, or that those individual events are due to human-caused climate change. Hurricanes, wildfires, mudslides, monsoons, and other sudden-onset events, as well as slow-onset ones such as drought, extreme heat, and sea-level rise, have happened for millennia. To attribute specific impacts to human-made environmental change requires scientists to parse through years of data and pattern detection. In this episode, we speak with climate scientist Lisa Thalheimer, of the International Institute for Applied Systems Analysis, to explain how experts untangle the connections between climate change and migration.
S1 · E43
Jun 26, 2025 · 23 min
Small Islands, Big Challenges: Climate Change and Migration in the Caribbean
The small island nations that make up the Caribbean are incredibly vulnerable to the impacts of climate change. Many people and businesses are concentrated along the coastline, exposing them to intensifying hurricanes and rising sea levels. Are these hazards prompting greater displacement, either within the region or beyond? And could they reduce tourism, prompting economic shocks to countries dependent on vacationers? This episode discusses these issues and others with Natalie Dietrich Jones, a migration expert at the University of the West Indies.
S1 · E42
May 29, 2025 · 25 min
Can AI Predict Climate Migration?
Does AI have a role to play in mapping and predicting climate migration trends? In this episode of the podcast, we explore the issue with John Aoga, a postdoctoral researcher at UCLouvain in Belgium. He led a study using machine learning algorithms to trace how climate shocks affected migration intentions in several countries in West Africa. We discuss his findings and the broader promise and peril of using these types of technologies to map and predict migration flows.
S1 · E41
Apr 8, 2025 · 22 min
In a Climate Tinderbox, Migration Can Spark Violence
Under the right circumstances, climate-induced migration can aggravate the drivers of violent conflict. In places such as the Middle East and West Africa’s Sahel region, migration during times of environmental precarity can upset delicate social and demographic balances and place additional pressure on local authorities. Left to fester, the results can be deadly. This episode explores this connection between climate change and human mobility in conversation with journalist Peter Schwartzstein, author of the book The Heat and the Fury: On the Frontlines of Climate Violence.
S1 · E40
Mar 18, 2025 · 22 min
Climate Change, Migration & Conflict in Afghanistan and Pakistan
Floods, drought, extreme temperatures, and other climate events have devastated parts of Afghanistan and Pakistan. Repercussions of climate change come on top of years of conflict, which have left countless numbers of people unable to adapt to changing conditions. In response, many have fled, either in short-term displacement or permanent migration. Our podcast speaks with researchers Maryam Abbasi and Nasrat Sayed about how climate change is compelling migration in Afghanistan and Pakistan, layering on top of conflict as a driver for displacement.
S1 · E39
Jan 30, 2025 · 24 min
Stories of Climate Change and Migration to the U.S.-Mexico Border
Natural disasters and other impacts of climate change are already affecting migration, but often in complex ways. This episode, we speak with Julia Neusner, a lawyer and researcher with the International Refugee Assistance Project. She has conducted surveys and interviews with migrants at the U.S.-Mexico border about whether, where, and how they have experienced climate impacts, and offers some of their stories here. More than 40 percent of respondents said they experienced climate-related disasters, but few said those factors were the primary reason why they moved—offering further evidence of the fact that the linkages between changing climates and migration are not always clearcut.
S1 · E38
Dec 12, 2024 · 23 min
The World Is Going Greener. What Role Can Immigrants Play?
Many countries need more workers to fill jobs in clean energy and other sectors that are critical in the fight against a warming planet. Immigrants may be one part of the solution to the challenges posed by climate change. But governments have been slow to ramp up responses to recruit, train, or accredit foreign-born workers necessary for the green transition, with one model estimating a shortage of 7 million green workers globally by 2030. This episode discusses the labor picture and global trends in green sectors with Kate Hooper, a Migration Policy Institute senior policy analyst who focuses on global labor migration.
S1 · E37
Nov 15, 2024 · 24 min
The Reverse of Climate Migration: Should There Be a Right Not to Be Displaced amid Climate Change?
The international humanitarian protection system that was built in the aftermath of World War II does not offer protection for people displaced by climate change. In this episode, former UN Deputy High Commissioner for Refugees T. Alexander Aleinikoff, who is now Executive Dean of The New School for Social Research, calls the refugee system “broken.” Rather than expanding to accommodate “climate refugees,” he makes the case for starting over with a new paradigm focused on a right not to be displaced. Such a system would be designed to help people stay in their homes through climate adaptations and resilience, he argues, and provide a mechanism for seeking justice.
S1 · E36
Oct 4, 2024 · 23 min
How We Talk about Climate Migration Shapes Treatment of “Climate Refugees”
The ways in which people talk about climate migration can affect how individuals are treated. While many activists frame climate migrants as blameless victims of circumstance and even refer to them as “climate refugees,” this approach does not always lead to public sympathy. Moreover, highlighting the role of climate in displacement can unintentionally cause a backlash among host communities, who themselves likely are experiencing or expecting to face similar environmental challenges. In this episode, we speak with Natalia Banulescu-Bogdan, who is deputy director of MPI's International Program and our in-house expert on public opinion and migration messaging, about the narratives and public attitudes towards climate migrants.

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