Every exchange student’s Instagram tells the same story: new city, new skyline, new self. What it rarely shows is the emissions receipt behind that story — aviation is one of the most carbon-intensive ways to move a human body across a border, disproportionate to the distance it covers. Studying Health Policy and Management, I’ve spent three years learning that environment and health are inseparable: polluted air becomes asthma, degraded water becomes disease. So when I accepted a year-long place at the University of Bristol’s Department of Policy Studies, I couldn’t treat my own mobility as separate from everything I study. If my discipline exists to ask what an environment does to human bodies, I had to ask the same question of my own flight.
That’s partly why Bristol, specifically. In 2018, it became the first city in Europe to declare a climate emergency, and its council has since pledged to make the city carbon neutral by 2030 — one of the most ambitious targets of any UK city. It also hosts the Cabot Institute, built on the premise that environmental problems can’t be solved inside one discipline, and a WHO Collaborating Centre focused on healthy urban environments — the exact intersection of SDG 3 (Good Health and Well-being) and SDG 11 (Sustainable Cities) I’d been circling in Korea without a name for it. I intend to attend their public seminars and, where coursework allows, build assignments around how UK urban health policy accounts for — or ignores — its own climate footprint, then bring that framework home to Korea’s health-environment policy gaps.
None of that excuses the getting-there. So the getting-there has rules now. My Switzerland and Italy legs are already booked entirely by train, not flight — a slower border-crossing that trades hours in the air for a day watching the Alps actually happen outside a window, at a fraction of the emissions. For the one flight I can’t route around — Korea to the UK — I’ve bought a Gold Standard-certified carbon offset, chosen because it funds verified renewable energy and community projects rather than vague tree-planting promises. My suitcase carries the smaller commitments: a refillable bottle, solid toiletries, no single-use anything — SDG 12 in its least glamorous form. And once I’m there, I’ll be one more person choosing a bike over a taxi, feeding into the same shift the city itself is trying to make: Bristol’s own target is to lift walking, cycling, and public transport to 70% of commuter journeys, up from 41% today.
I don’t think sustainable travel is a badge earned once at departure. It’s closer to a hypothesis you keep testing: is there a version of this trip, this year, this discipline, that costs the planet less than the last one? I’m going to Bristol to study that question in policy terms — and to try answering it myself, one train ticket at a time.
References: https://www.bristol.ac.uk/study/postgraduate/research/sustainable-futures/
https://www.bristol.gov.uk/council/policies-plans-and-strategies/our-action-on-climate-and-ecology/our-climate-action-on-public-services
https://www.goldstandard.org/
