School of Sustainability

Reading in progress
Sunday 27 September 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

Push three acorns into a pot of soil and leave it somewhere the rain will find it. By spring you will have oak trees to give away.

270 of 365
  1. Land & WaterGoleniów, Poland, 14.83° E

    They raised the sturgeon in the river's own water first

    Fifteen larger juveniles went in alongside the thousands of fifteen-centimetre fish

    On 18 September, on the bank of the Ina at Goleniów, several hundred people turned up to put fish into a river. Schoolchildren, anglers and pensioners tipped buckets and watched the water take them: fifteen larger juvenile Atlantic sturgeon, and several thousand smaller ones, each about fifteen centimetres long and a long way from the several-metre, 350-kilo animals their kind can become if left alone for enough decades. It was the first such release on the Polish side of the Oder Delta, following earlier ones in Germany.

    The fish they were returning had been absent for a lifetime. Atlantic sturgeon once ran the Baltic tributaries in numbers, but the twentieth century took them apart piece by piece - overfishing first, then the straightening, deepening and embanking of rivers across the delta, pollution, the loss of spawning gravel, and weirs that stopped migrants reaching it. What disappeared was not a stock but a resident: an armoured, barbelled bottom-feeder whose foraging stirs the riverbed and whose migrations stitch fresh water to the Stettin Lagoon and the sea.

    The Ina was chosen because years of unglamorous work had made it worth a sturgeon's time. The Rewilding Oder Delta team and local partners on both sides of the border have been pulling out migration barriers, restoring spawning grounds, rewetting wetlands and improving water quality along the catchment. A sturgeon is an unforgiving auditor of all this - it needs free-flowing, oxygen-rich water and clean gravel to breed - which is precisely why the partners want it back. A river that suits sturgeon suits salmon, eels and everything else that migrates.

    The juveniles themselves were a cross-border production. The larvae came from Germany, where the Leibniz Institute of Freshwater Ecology and a Mecklenburg-Vorpommern research institute oversaw hatching, and the fish were grown out at the Polish Anglers Union's rearing centre in Goleniów. There they were fed only natural food, in tanks plumbed with water from the Wiśniówka, a small tributary of the Ina - so that by the time they slid into the river, its chemistry and smell were already familiar.

    September's release is deliberately small. The plan is more than 20,000 young sturgeon in 2027, building towards as many as 100,000 juveniles a year, kept up long enough for the fish to come back on their own - which, for a species that matures slowly and can live for many decades, means the people at Goleniów will wait a long while to learn what their morning amounted to.

    Practice

    If you rear fish for release, plumb the rearing tanks with water from the receiving river or its tributary, and feed natural food only. The Goleniów centre ran its tanks on Wiśniówka water so the juveniles entered the Ina already imprinted on it - a matter of pipework, not expense.

    Rewilding Europe · Read the source

    Was this reading useful?
Machine

The quiet day in the machine room

Nothing in today's harvest touched on machine learning. No sensor on a hedge, no model sorting moth photographs, no council buying a system it cannot maintain. The feeds came in, the reading was done, and the tool in this publication's own hand found no work of its own kind to report on. That is worth saying plainly, because this column exists to account for the machine as much as to describe it, and an honest account includes the quiet days.

So here is what the machine did instead. It read a piece about sturgeon raised in the river's own water before release, and produced a summary. It did not smell the hatchery or feel the water temperature; it matched patterns in text against patterns in other text and arranged the result into sentences a person then checked. The cost of that was electricity and cooling water in a data centre somewhere, spent to save an editor perhaps twenty minutes. Whether that trade is worth making is a genuine question this publication asks itself every day, and some days the answer is less comfortable than others.

The failure mode worth naming on a quiet day is not the dramatic one. It is the slow drift: the summary read often enough that nobody checks it against the source, the confident tone applied to a subject where confidence was not earned. A sturgeon piece summarised slightly wrong is a small thing. The same drift applied to a planning application or a pesticide approval is not. The repairer's habit is to keep opening the casing, even when nothing is obviously broken.

Tomorrow the harvest may bring a model doing something small and useful in one field somewhere, and this column will look at it properly. Today the honest entry is a log line: ran, read, found nothing, cost something anyway.

They raised the sturgeon in the river's own water first

Cauliflower cheese, leaves and all

vegetarian

For the first cauliflower that looks like it means it; the leaves are the best part if you crisp them.

  • one large cauliflower with its leaves
  • 40g butter
  • 40g plain flour
  • 500ml milk
  • 150g mature cheddar, grated
  • a teaspoon of English mustard
  • a slice of stale bread, blitzed or crumbled
  • salt, pepper, a little oil

Heat the oven to 200°C (180 fan). Cut the cauliflower into large florets and slice the core rather than binning it - it cooks to the same tenderness, just a minute behind - then simmer everything in salted water for five minutes and drain well. Make the sauce in the same pan: melt the butter, stir in the flour and cook it for a minute, then add the milk a splash at a time until it thickens enough to coat the back of a spoon, and take it off the heat before stirring in the mustard and most of the cheese. Toss the leaves with oil and salt and spread them on the tray around the dish, or on their own if there isn't room. Tip the cauliflower into a small baking dish, pour the sauce over, scatter the rest of the cheese and the breadcrumbs, and bake for twenty minutes until the top is browned and the leaves have gone crisp and dark at the edges. The smell changes from milk to toast when it is ready.

Serves 2 · about £2.80 · Vegan: use oil and oat milk for the sauce, a spoonful of mustard and nutritional yeast in place of the cheese

Tomorrow: Cold slices fry well in butter the next day and go under a fried egg; any crisp leaves left over can be crumbled over soup.

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.

Soil & Seed

Land & Water

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