A House for the Planet

This essay introduces /stewardship/, a vision for a Centre for Planetary Stewardship that you can walk through in 3D. None of it has been built. Here is why something like it should be.

Imagine a building on a street you already walk down. No turnstile, no ticket. You go in because it is raining, or because someone told you the soup is good, or because your daughter’s class came last week and she has not stopped talking about the dome. Inside, there is a forest. Not a row of potted ficus in an atrium: a young native forest, a little unruly, growing in a court open to the sky, with an old oak in the middle and rainwater collecting at its roots. Around it, on wooden floors that step back one above the other so that every level looks down into the trees, people are doing what people do in public places. Reading. Eating. Waiting for someone. Arguing.

What they share is the subject. Everything here, from the books to the lunch, is about the one condition that every other condition now rests on: the state of the Earth system.

The organ we never grew

Societies grow organs for the things they can only do together. Libraries keep memory. Courts weigh conflict. Parliaments deliberate, hospitals care, observatories watch the sky. Each is a building and a habit, and each began as a proposal that sounded extravagant at the time. Between 1883 and 1929, Andrew Carnegie’s money built 2,509 public libraries, and only for towns willing to pay, every year, to keep them open.

We have institutes that study the Earth system, museums that tell its past, planetariums that show the sky. What we do not have, anywhere, is a public place devoted to the planetary itself: to Earth as one living system that we belong to, depend on, and are now changing. The science has never been clearer or easier to find. What is missing is somewhere to meet it, and to meet one another around it.

The absence has a history. In the twentieth century humanity grew a body that can move the climate — muscles of coal and oil, a circulation of shipping lanes and fibre-optic cable — far faster than it grew the nerves to feel what that body does, or the habits to steer it. In 2024 the world was, for the first time over a full calendar year, more than 1.5 °C warmer than before industrialisation.¹ Seven of the nine planetary boundaries are now crossed.² Call it the Anthropocene conundrum: a species powerful enough to reshape a planet, still organised as though the planet were scenery.

Why another report won’t do it

For decades, environmental communication assumed that people act once they know. Mostly they don’t. What moves people is closer to home: what they see others doing, whom they trust, what they have touched and tasted, whether a better future seems possible at all.

Here is a strange fact. In a survey of 125 countries, 69% of people said they would give 1% of their income to fight climate change. Asked how many of their fellow citizens would do the same, they guessed 43%.³ Most people care, and most people believe they are alone in caring. That is a majority that cannot see itself, and its blindness has consequences, since norms do not change gradually; they tip. In controlled experiments, a committed minority of roughly a quarter of a group was enough to overturn an established convention.⁴

So the Centre does not bet on information. It bets on proximity: on a place where concern for the planet is visible every day, in plain sight, to everyone who walks past or stops for coffee. A building is a slow instrument. It works by repetition, over years, the way a library works on a neighbourhood.

A day there

What would you actually do in such a place?

In the morning, a school group sits under the dome and watches the planet turn — its winds, its shipping routes, its cities at night — from real data. At noon the café serves the planetary health diet, mostly plants, the one the EAT–Lancet Commission found could feed ten billion people within the Earth’s limits,⁵ and nobody calls it that; it is simply lunch, partly grown on the terraces. In the afternoon, below ground, a room called the Situation Room shows the planet’s vital signs in words anyone can read, a stair away from the Agora, where a citizens’ assembly is hearing evidence on the city’s next heatwave. On some nights the outdoor lights switch off so that the stars come out.

Every year the Centre also measures what the city knows about the Earth system and which futures its people can picture, and publishes the results. If people leave knowing nothing more and caring no differently, the numbers will say so.

Why I drew it

For five summers as a young man I worked at the Astrolab du Mont-Mégantic in Québec, giving talks on black holes, cosmology and the search for life elsewhere to whoever had driven up the mountain that evening, then taking them out to the telescopes. What I remember most is not what people learned. It is the way the dark changed how strangers spoke to one another. Something like the overview effect, without leaving the ground. The Centre began, for me, as a question: what if a city could have that hour every day of the year — and then a room, a stair away, in which to decide together what to do about it?

One organ among several

No single kind of building can carry the weight of the century. Other organs are already growing, unevenly, in different places. Wales passed a Well-being of Future Generations Act in 2015 and gave the generations not yet born a commissioner. Ireland asked ninety-nine randomly selected citizens what to do about its abortion law, and the 2018 referendum followed their advice; France asked 150 of them how to cut the country’s emissions by at least 40% by 2030. In 2017 Aotearoa New Zealand recognised the Whanganui River as a legal person, giving form in law to a relationship the river’s iwi had always held. Indigenous nations have practised stewardship for millennia without needing the word. In June 2026 Belgium named the first member of a new network of Chief Planetary Scientists: advisers who give the Earth system a voice in government, as a chief medical officer does for public health.

The Centre would sit among these, not above them: a public house where they meet. An adviser gains a public, an assembly a room, a child a forest.

What could go wrong

A lot. Such a building costs money and takes years. It could become a showroom for sponsors who would like to be photographed near trees, or preach to people who already agree. And the measured effects of communication are modest; no exhibition, however beautiful, has ever turned a society on its own.

Most of these risks shaped the design. Entry is free, at street level. The structure is timber and earth, and its energy, water and food systems are left in view, part of the visit. It is governed as a commons, with rules made by the people who use it.⁶ And it is proposed not as a monument but as a pattern: fifteen relationships between people and places that any city can build in its own way. A boreal city might roof its court against winter, a tropical one make it a well of shade. The most planetary building is often the one already standing.

The first of many

The building on the page is one answer, drawn in enough detail to be argued with. Others will draw it in other languages, with other knowledges at its heart, and they should. The first Centres would publish everything needed to start another (the patterns, the programmes, the ways of governing) so that a network can grow from many seeds, with no headquarters.

Somebody will have to build the first one. There will be as many shapes as there are ways of inhabiting the Earth, and ours is only one. But I am convinced that humanity, now a community of fate, cannot go much longer without such houses.

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