A journey is often measured by distance travelled, but I believe its true value is measured by what it leaves behind. Preparing for my exchange semester at Leeds, I want this trip to expand my horizons without contracting someone else’s. My Business, Sustainability and Environment degree has taught me to think in accounts rather than intentions, so I open this one the way any honest account should: with the debit already entered, not deferred.
The debit announces itself before I’ve packed a single garment. Tourism accounts for nearly 9% of global emissions, and flying alone contributes over half. A single long-haul return flight can produce more carbon than some people in low-income countries generate in a year; a statistic that turned into an indictment the moment I booked mine. No reusable bottle rebalances a cost that size. To be ethical, the first entry has to remain an admission, not an erasure.
What happens after landing is where the account can still move in my favour. SDG 13, Target 13.3, calls for better climate education and awareness, meaning the choice is mine to make. Rail over short-haul flights is a matter of arithmetic, not principle: a train emits roughly a tenth of the carbon per kilometre, and I’ve already mapped my regional travel by track instead of tarmac. None of this repays the flight. It simply refuses to add to it.
SDG 12, Target 12.8, is smaller and more personal than policy: whether I have the awareness to consume responsibly, not whether a government legislates it for me. It shows first in how I pack: a suitcase is an unforgiving unit of measurement, and fitting five months of life into one is a reality check I keep returning to, proof that most of what I own is habit, not necessity. The rule I am left with survives daily testing: second-hand before new, need before desire.
The same logic extends to food. Target 12.3 calls for halving global food waste; an ambition that asks for attention, not perfection. This will likely be where I learn it properly: my first time cooking for myself, need separated from habit by nothing more forgiving than a student budget. Buy what I’ll eat. Eat what I buy. Simple, which is probably why it works.
The entry that matters most can’t really be itemised. SDG 4, Target 4.7, speaks of education for sustainable development not as a module but as a way of being. It rarely arrives through a reading list. It arrives through sitting beside people who consume and travel differently, and, I suspect, through exercises like this one that hold an intention still long enough to test it. Writing this account is not separate from the target; it’s the target being practised.
The flight is booked, the largest debit on this ledger, spent and irreversible. Everything after landing is the only part of the account I still get to write.
