The highest point in an entire nation is lower than many buildings in Dublin.
A young woman from one of Ireland's smallest inhabited islands has traveled to one of the world's most imperiled nations, carrying with her the particular attentiveness of someone who has always lived close to the sea. Treasa Cadogan, now a UN Climate Change Officer based in Fiji, has found in the Pacific not an alien world but a mirror—communities shaped by ocean, kinship, and the quiet anxiety of a landscape that may not hold. In Tuvalu, where the entire nation rises no higher than a double-decker bus above the waves, the abstractions of climate science become something a person can stand inside and feel.
- Tuvalu's highest point is just 4.5 metres above sea level—an entire nation balanced on a ledge that rising seas are steadily erasing.
- Coral reefs that once defined Pacific marine life are bleaching and dying, casualties of warming oceans and increasingly violent cyclone seasons.
- Vanuatu was struck by two cyclones within seventy-two hours in March, sending a warning pulse through the entire region that no island can ignore.
- Young Tuvaluans name climate adaptation as their greatest fear, but beneath it lie the same wounds familiar to rural Ireland: housing shortages, scarce opportunity, and the pressure to leave the only home they know—except they cannot move inland.
- International bodies like the UN are deploying officers to document, advise, and coordinate responses, but the gap between institutional strategy and existential threat remains vast and urgent.
Treasa Cadogan grew up on Cape Clear Island off the coast of West Cork, where the Atlantic shapes everything. In November 2022, she moved to Fiji to serve as a Climate Change Officer with the UN—not to read about climate disruption in reports, but to stand inside it. Suva, Fiji's capital, offered no postcard fantasy: traffic, a working port, heat above thirty degrees every day, and coral reefs that, when she snorkeled above them, revealed themselves to be bleached and damaged by warming waters and more frequent storms.
The deeper reckoning came when she traveled to Tuvalu on a UN mission. Nine fragile atoll islands arranged in a ring between Hawaii and Australia, with a highest point of just 4.5 metres above sea level. She had studied Tuvalu's vulnerabilities as an undergraduate at UCC. Now the country she had known through research was populated with real people facing real erasure. In Funafuti, the capital, the airport runway doubles as a communal gathering space between the three weekly flights—a detail that quietly captures how differently land is understood when there is so little of it.
Meeting with young Tuvaluans, Cadogan expected to hear only about climate. She did—but she also heard about housing shortages, limited transport, and the scarcity of opportunity that drives young people away from small communities. The same pressures she had witnessed in rural Ireland. The difference is that Tuvaluans have nowhere to retreat to. There is no inland. There is only 4.5 metres, and the sea rising to meet it.
What Cadogan has found across the Pacific is an unexpected kinship with home: the warmth of tight communities, the pride of island peoples, the ever-present awareness of weather as something that governs life rather than merely accompanies it. The work is teaching her climate systems and adaptation strategy. But the education that will last is simpler and harder—the knowledge that the highest point of an entire nation sits lower than many buildings in Dublin, and that the people living there are watching the horizon with a patience the rest of the world has not yet earned.
Treasa Cadogan grew up on Cape Clear Island, a windswept outcrop off the coast of West Cork where the Atlantic crashes against stone. In November 2022, she moved to Fiji to work as a Climate Change Officer for the United Nations Resident Coordinator's Office. The shift was deliberate. She wanted to see with her own eyes what climate change actually does to a place—not read about it in reports, but stand in it, breathe it, watch it unfold.
Suva, Fiji's capital, is not the postcard version of the Pacific. There are traffic jams. There is a busy fishing port. The nearest beach is an hour's drive away. What struck Cadogan most was the weather itself: more than thirty degrees every day, humidity that clings to everything, and a rhythm of seasons that bears no resemblance to Ireland's. There is the cyclone season, wet and violent. There is the dry season, cooler but still warm. The coral reefs nearby are extraordinary—a marine biodiversity unlike anything in Irish waters. But when she snorkeled above them, she saw bleached corals, dead or damaged, casualties of more frequent cyclones and the warming ocean itself.
The real education came when Cadogan traveled to Tuvalu on a UN mission. The country sits halfway between Hawaii and Australia, nine small atoll and reef islands arranged in a ring, each one fragile. The highest point above sea level is 4.5 metres—the height of a double-decker bus. Ireland's highest mountain rises above 1,000 metres. The mathematics of vulnerability are stark. An atoll is a ring of land with a lagoon at its center, coral and sand holding back the sea. There are only three flights into Tuvalu each week from Fiji. Outside those flight times, the runway in Funafuti, the capital, becomes a social space—roads weave around it, people gather there, it serves the community in ways a runway in Dublin never could.
Walking through Funafuti felt surreal to Cadogan. She had studied the country's climate vulnerabilities as an undergraduate at UCC, where she focused on international development and food policy. The place she had known only through research was suddenly real, populated with actual people facing actual threats. One local man she met had worked on cargo ships and spent time in Cork. No matter how far you travel, she realized, you find an Irish connection.
She held a meeting with a group of young Tuvaluans to discuss their priorities and concerns. Climate adaptation was undoubtedly at the top. But what surprised her was how familiar many of the other challenges sounded. Housing shortages. Limited transport options. Few opportunities for young people to build a life. These were not exotic problems. They were the same struggles she had witnessed growing up in rural Ireland, the same reasons young people leave small communities searching for something larger. The difference, of course, is that young Tuvaluans cannot simply move inland. There is nowhere to go but up, and up only goes 4.5 metres.
The Pacific, Cadogan has come to understand, shares more with Ireland than outsiders might assume. Yes, there is the weather—the heat, the coconut palms, the endless sun. But there is also the friendliness, the strong sense of community, the way people know each other and look out for one another. There is also the vulnerability. Vanuatu, a neighboring island nation, experienced two cyclones in less than seventy-two hours in March. The alert went out across the region. Since arriving, Cadogan has not endured a major cyclone herself, but the threat is always present, always real.
Fiji itself is a developing country wrestling with climate change, poverty, and food security. The beaches and coconut trees are real, but they are not the whole story. What Cadogan has found in her work and her lived experience is a country of kind, welcoming, proud people—and, she notes with warmth, great singers. The job with the United Nations is teaching her about climate systems and adaptation strategies. But the deeper education is happening in the everyday: in conversations with young people facing an uncertain future, in the sight of bleached coral, in the knowledge that the highest point in an entire nation is lower than many buildings in Dublin.
Notable Quotes
Tuvalu is a unique place, being one of the world's most remote and least-visited countries.— Treasa Cadogan
You'll always find an Irish connection no matter how far away from home you are.— Treasa Cadogan, reflecting on meeting a local Tuvaluan who had worked in Cork
The Hearth Conversation Another angle on the story
You studied Tuvalu in university, then actually went there. What was that moment like, stepping off the plane?
Surreal. I had spent so much time with data and maps and vulnerability assessments. Then suddenly I was walking the actual streets, meeting actual people. It made everything concrete in a way books never do.
The highest point is 4.5 metres. That's not abstract—that's a sentence that changes how you think about a place.
Exactly. You can visualize it. You can stand there and understand that there is nowhere higher to go. When you're from Ireland, where you can walk up a mountain, that's hard to grasp at first.
You found that young people there face the same problems as young people in rural Ireland—housing, transport, opportunity. Did that surprise you?
It did, but it shouldn't have. Climate change doesn't erase the ordinary struggles of development. If anything, it compounds them. A young person in Tuvalu can't just move to Dublin like I could. The options are much narrower.
What did you tell them?
I listened mostly. I was there to understand their priorities, not to impose solutions. But I think the conversation itself mattered—that someone from outside was taking their concerns seriously.
Do you think your Irish background helped you connect with them?
I think it did. Rural communities, whether in Cork or Tuvalu, have a certain rhythm and intimacy. People know each other. There's a shared understanding of what it means to live somewhere beautiful but constrained.