School of Sustainability

Reading in progress
Saturday 15 August 2026

What is working, where, and who made it work. Read the whole turn of the earth in two minutes, then go as deep as you like.

One little thing

Scoop the seeds from a ripe tomato onto a square of kitchen paper and leave it on the windowsill to dry. That is next summer, sorted.

227 of 365
  1. Land & WaterKnepp Estate, West Sussex, 0.33° W

    A hundred years gone, the black-veined white returns in a cage

    In August, in a corner of the Knepp estate in West Sussex, there are netted cages with eggs inside them. The eggs belong to the black-veined white, a butterfly that has been extinct in Britain for roughly a century, laid by adults brought over from Spain earlier this year. Standing at the netting is Neil Hulme, a butterfly conservationist, watching the way you watch something you cannot actually protect.

    The plan is simple to say and hard to do. The caterpillars that hatch from these eggs have to survive an English winter, outdoors, in cages that keep the worst off but not everything - predators work their way through netting, and cold does what it likes. Come spring, whatever has made it through will be counted, and the butterflies that emerge will be released on the South Downs. The whole enterprise hangs on a number nobody will know until next year: how many come out the other side of winter.

    The episode is part of the Knepp Wilding podcast, hosted by Isabella Tree, co-founder of the rewilding project and author of Wilding. Knepp has made a habit of this kind of long-odds patience - letting land and species find their way back over years rather than managing them towards a target. A reintroduction like this one is the sharpest version of the same wager: you do the work, you wait through the winter, and you find out afterwards whether it was enough.

    Practice

    Lost butterflies come back through habitat, not cages. If you hold even a scrap of land, let blackthorn sucker into rough grass along a sunny edge and leave it uncut for two winters; scrub like that is the food and the shelter for most of the species anyone might one day try to return.

    Knepp Estate · Read the source

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  2. A pea called Corgi and the work of keeping seeds true

    Before a seed ever reaches a packet, someone has to keep it honest. Open-pollinated varieties hold their character only if stray pollen from a neighbouring strain is kept away, and Seed Savers Exchange opens the third episode of its podcast, Sowing Connections, in the field, explaining the careful isolation practices it uses to keep varieties true-to-type. The point is plain: the seed harvested this autumn should grow the same plant next spring, and the one after that.

    The episode then sits down with Marion Nestle, the New York University nutritionist and food policy scholar, in conversation with Mike Bollinger. Her subject, pursued through books and research on the politics of food and dietary choice, is the long chain of decisions - about seeds, agriculture, policy and markets - that is made before any eater decides anything. Industrial agriculture, food policy, ultra-processed foods and grocery store marketing all get their turn, along with the question of what gardeners, farmers, communities and policymakers might do about it.

    The episode closes where it began, with a seed. The variety spotlight falls on the 'Corgi' pea, a sweet and versatile heirloom from the Seed Savers Exchange collection, which can be requested through The Exchange, the organisation's listing offering thousands of varieties. The through-line is deliberate: policy and markets shape the food system from above, but the collection persists because growers keep requesting, planting and re-saving particular seeds, one variety at a time.

    Practice

    Seed Savers Exchange keeps its open-pollinated varieties true-to-type with careful isolation practices - and the same principle applies at home: if you save seed, keep one variety well away from another of the same species. To start with a variety already kept true, request 'Corgi' pea seed through The Exchange, the organisation's listing of thousands of varieties.

    Seed Savers Exchange · Read the source

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Machine

The machine that wrote this, and the hands that did the work

This column was drafted by a machine, as were the two readings above it. That is worth stating plainly today, because both readings are about kinds of knowing that no model in this building has. One is about a butterfly that has been absent from Britain for a century, and the cages and fieldcraft involved in coaxing it back. The other is about a pea called Corgi and the patience of keeping a seed line true: roguing out the off-types, saving from the right pods, year after year, by people who can tell a true plant from a wrong one by looking at it.

The model that assembled those summaries has never looked at a pea. It has no opinion about whether a black-veined white has emerged correctly, and it could not walk a hedgerow survey if you asked it to. What it did was cheaper and duller: it read text other people wrote about work other people did, and it produced a compressed version. The cost was some electricity and water at a datacentre none of us will visit, and the benefit was that a small publication could carry two more stories than its human hands had time to write up. Whether that trade is a good one depends entirely on whether the original reporting survives contact with the compression, which is a judgement a person still has to make.

There is a version of this tool that would be more useful than a summariser. A model that helped transcribe a seed-saver's handwritten records going back forty years, or that flagged candidate black-veined white sightings from a county's worth of phone photos for a recorder to confirm or reject, would be doing something closer to the work. But the confirmation, the roguing, the caging, the walking — none of that gets handed over, because the error would land on the butterfly and the pea, not on the model.

So the honest account of this publication's machine is a modest one. It reads fast and knows nothing. The knowing lives in the same place it always did, which is why the readings it produces are only ever as good as the people whose work it is borrowing.

Knepp Estate · Today's readings · source

Slow runner beans with marjoram and crushed potatoes

vegetarian

For the fortnight when the beans all come at once and you stop pretending they should be squeaky.

  • 400g runner beans
  • 400g floury potatoes
  • one large onion
  • three cloves of garlic
  • two tablespoons of olive oil
  • a small handful of fresh marjoram or oregano, leaves picked
  • a tablespoon of cider vinegar
  • a knob of butter, about 15g
  • salt and black pepper

Top, tail and string the beans if they need it, then cut them into pieces about the length of your little finger. Soften the sliced onion in the oil over a low heat for ten minutes, add the garlic and the beans with a splash of water, put a lid on and leave them over a gentle heat for twenty-five minutes, stirring now and then, until they have gone a deep olive green and slump when prodded. Meanwhile boil the potatoes whole in their skins until a knife slides through, drain them and crush each one roughly with a fork - you want broken pieces, not mash. Take the lid off the beans for the last few minutes to let any water cook away, then stir through the vinegar, most of the marjoram and enough salt to wake it up. Pile the potatoes into bowls, spoon the beans and their juices over, and finish with the butter and the rest of the herbs. It is ready when the beans taste more of themselves than of anything else; the colour will tell you before that.

Serves 2 · about £1.80 · Vegan: cook with olive oil throughout and skip the butter at the end

Tomorrow: Any beans left are good cold the next day with a boiled egg, or warmed through and folded into pasta with a little of their cooking liquor.

Archive

Nothing drops off. Today's readings move here tomorrow morning and stay, filed under the entrypoint they came in on. Below is the back-spool already gathered from the network.

Source register

The institutions whose public output feeds this reading. Each is watched every morning for what it publishes openly. Individuals are not listed here.

Soil & Seed

Permaculture Association · Permaculture Magazine · Regeneration International · Seed Savers Exchange · Garden Organic · Navdanya · Biodynamic Association UK · Biodynamic Demeter Alliance · Rodale Institute · Kiss the Ground · Savory Institute · Landworkers Alliance · Sustainable Food Trust · Real Farming Trust · Agroforestry Research Trust · Soil Association · A Growing Culture · Pasture for Life · Farmerama Radio

Land & Water

Ecosystem Restoration Communities · Rewilding Britain · Rewilding Europe · Trees for Life · Knepp Estate · Beaver Trust

Making & Mending

The Restart Project · Low-tech Magazine · Makery · Repair Cafe International · Precious Plastic · Library of Things · Wuyong (Ma Ke)

Shelter & Warmth

Centre for Alternative Technology · AECB · Passivhaus Trust · Community Energy England

Art & Story

Julie's Bicycle · Dark Mountain Project · Emergence Magazine · Orion Magazine · Resurgence & Ecologist

Community & Commons

Shareable · Transition Network · Global Ecovillage Network · Capital Institute

Attention

Bioneers · Gaia Education · Schumacher College · Center for Humans and Nature · Findhorn Foundation