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A little over a century ago, North American orchards grew some 17,000 named varieties of apple — russets and pippins and sheepnoses, sour keepers bred for a single county's frost. Today 86% of them are gone, and fifteen varieties account for the overwhelming majority of apples sold in American stores.
Apples are just the crop we happened to count. The same narrowing swept through wheat, rice, maize and beans across the twentieth century as farmers switched to a handful of high-yielding types. The UN's Food and Agriculture Organization has long estimated that around three-quarters of crop genetic diversity was lost between 1900 and 2000 — a figure repeated so often that its exact origin is now hard to trace, though the trend it describes is not in doubt.
The plant scientist Cary Fowler called this loss "silent, rapid, inexorable." Silent because a seed variety doesn't go extinct all at once — it just stops being planted, and one season nobody has it anymore. Drag the century forward below, and watch it happen.
Summary of this interactive: an illustrative century of crop-variety loss. Dragging the year slider from 1903 to 2000 reduces the surviving apple varieties from about 17,000 to roughly 15, with most of the loss falling across the mid-twentieth century.
Diversity that leaves the field isn't necessarily gone. For a century, countries have kept genebanks — chilled warehouses of seed samples, each one a living archive of a crop's genetic past. There are now more than 1,700 of them worldwide, holding the seeds of 7.4 million plant varieties.
Fowler, who first proposed an international crop-diversity treaty in 1979, spent the 1980s and 90s discovering an uncomfortable truth: the archives themselves were failing. Underfunded genebanks were losing samples to broken freezers, humidity, war and neglect. The backup for the world's food was quietly deteriorating — and almost no one was watching.
A genebank is only as safe as its worst power cut. What the world needed was a copy of the copies, somewhere nothing could reach it.
The answer to where already existed. Since 1984, the Nordic Gene Bank had been stashing duplicate seeds inside an abandoned coal mine on the Arctic archipelago of Svalbard — using the permafrost as a free freezer. It worked well enough to prove the concept, and badly enough (hydrocarbon gases, only ‑3.5°C) to show a purpose-built vault was needed. In 2004, the Crop Trust was founded to endow the world's genebanks permanently; Norway agreed to carve a real vault into the rock.
The Svalbard Global Seed Vault opened on 26 February 2008, bored 130 metres into a sandstone mountain on Spitsbergen, at 78° north — closer to the North Pole than to the Arctic Circle. Norway paid for it outright, about 45 million kroner (US$8.8M at the time). At the opening, Prime Minister Jens Stoltenberg and the Nobel laureate Wangari Maathai laid the first seeds; more than 320,000 samples went in that day.
Four things make this spot close to ideal. The site itself is forgiving: remote, geologically stable, and high enough to stay dry as seas rise. It has real infrastructure — a town, an airport. Under the 1920 Svalbard Treaty it is Norwegian but demilitarized, neutral ground for a global commons. And above all, the mountain is cold: the surrounding permafrost sits near ‑3°C on its own, so if the cooling ever fails, physics keeps the seeds frozen while someone fixes the freezers.
That last claim is what the whole place rests on. So test it — cut the power and see how long the mountain holds.
Summary of this interactive: with cooling online the chamber holds at minus 18 degrees Celsius. Cutting the power warms it only slowly, and the curve levels off near minus 3 degrees — the temperature of the surrounding permafrost bedrock — so the seeds stay frozen for weeks with no electricity at all.
The vault owns almost nothing inside it. Seeds arrive from genebanks worldwide, sealed in three-ply foil packets, boxed, and shelved at ‑18°C under a "black-box" rule — like a safe-deposit box, the depositor keeps ownership and holds the only key. Norway can't open Syria's boxes; the Crop Trust can't open Peru's.
Boxes are coming down the conveyor below, each labelled with a real depositor. Tap a box to seal and shelve it before it slides past. Watch the mountain fill — and keep an eye on the gold ICARDA box from Aleppo, Syria. You'll want to remember where it goes.
Summary of this interactive: seed boxes arrive from genebanks worldwide, are sealed in three-ply foil and shelved at minus 18 degrees Celsius under a black-box rule — each depositor keeps ownership and holds the only key. Keyboard: focus this panel and press Enter or Space to shelve the next waiting box. Shelved accessions are listed in the register below.
In 2024 alone, 64,331 new safety duplicates arrived from 54 depositors, 21 of them sending seeds for the first time. Depositors range from vast international institutes to a single nation's heritage program. In February 2020 the Cherokee Nation became the first US tribe to deposit — nine varieties predating European arrival, including its sacred Cherokee White Eagle Corn.
"Cherokees cannot be Cherokees without their Cherokee plants." — Pat Gwin, Cherokee Nation
That line is the quiet argument of the whole place: crop diversity isn't only calories and yields, it's culture and memory and the option to grow something else when the climate changes the rules. The vault now guards 1.4 million accessions — and that's the easy part. The hard part is proving a backup is worth building before you ever need it. Svalbard has needed it exactly once.
ICARDA — the International Center for Agricultural Research in the Dry Areas — kept one of the world's most important collections of drought-hardy wheat, barley and lentil at Tel Hadya, near Aleppo, Syria. Then the war came. The station was looted and damaged; the on-site collection was lost. But between 2008 and 2014, ICARDA had shipped 116,484 backup samples to Svalbard.
So in 2015 it did what no depositor had ever done: it asked for its seeds back. Run the loop yourself — withdraw the Aleppo backups from the mountain, regrow them in safe fields, and re-deposit the fresh harvest. It happened three times, between 2015 and 2019.
Summary of this interactive: the three stages of the only withdrawal in the vault's history. About 116,484 ICARDA samples were withdrawn from Svalbard after the war in Syria made its Aleppo genebank unreachable, regrown in Lebanon and Morocco, and more than 42,729 accessions were re-deposited into the vault. The buttons below step through each stage.
The seeds were flown to new stations in Terbol, Lebanon and Rabat, Morocco, planted, multiplied, and harvested. Then ICARDA began sending fresh duplicates back to Svalbard — more than 42,729 accessions re-deposited so far. The backup was used, and then rebuilt.
A vault this good at symbolism attracts fair criticisms, and the case for it is stronger for admitting them. Three are worth knowing.
Roughly one in three of the distinct samples held in the world's genebanks has a backup in Svalbard. The vault is a safety net with real holes — and it is only ever as strong as the underfunded genebanks that fill it and, crucially, regenerate aging seeds when they lose viability. The freezer doesn't grow anything; people do.
Groups like GRAIN argue that storing seeds in an Arctic freezer is no substitute for keeping them growing and evolving in farmers' fields — that ex-situ backup can quietly excuse the loss of living, in-situ diversity, and the farming cultures that sustain it. A seed in a box has stopped adapting to the world outside the box.
In October 2016 an unusually warm winter and heavy rain thawed permafrost and pushed meltwater about 15 metres into the entrance tunnel, where it froze. No seeds were ever at risk, but a vault built to outlast climate change had been touched by it — the Arctic is warming roughly four times the global rate. Norway responded with major waterproofing and drainage upgrades, completed in 2019.
None of this is a reason the vault shouldn't exist. It's a reason to be clear-eyed about what it is: a last line, not a first one — the copy you hope never to open.
Norway built the vault, but the seeds inside depend on the genebanks that feed it — and those need money that never runs out. The Crop Trust's answer is an endowment: a permanent fund whose interest pays to conserve crops "forever." The target is US$850 million; about $297 million has been raised. It supports conservation across more than 80 countries and 165 partner institutions.
The idea has quietly spread. Next door in another Svalbard mine, the Arctic World Archive now stores humanity's data on 500-year film — including, since 2020, a 21-terabyte snapshot of the world's open-source code from GitHub. Kew's Millennium Seed Bank does the same job for wild plants. The permafrost, it turns out, makes a good cold backup for more than seeds.
The real one runs on an endowment that isn't full yet. This is independent editorial content — we are not affiliated with the Crop Trust and receive nothing from the link below. If you'd like to support the work described, you can give directly.
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