Letter XIV: Dimming the Sun, Dimming Consent

Aeroplane emitting solar dimming particulates over green countryside and blue sky, leaving a dull desert and darkened sky behind, with the words "Democracy Does Not End in the Stratosphere" written across the bottom.

By Martyn Walker
Published in Letters from a Nation in Decline

“Some crimes offend the law, others offend the senses. But a few — like dimming the sun — offend both, and then go on to threaten all life that depends on its light.”
Laurence J. Peter, posthumously paraphrased

The Nuremberg Code Still Applies — Just Look Up

We are governed now by people who believe it is acceptable to experiment on the atmosphere — and by extension, on all life within it — without consent, oversight, or consequence. The proposal to “blot out the sun” under the guise of solar geoengineering may seem the stuff of science fiction, but it is not only real, it has been quietly sanctioned.

In this country, where grey skies already dominate the greater part of the year, the very idea that we should deliberately reduce sunlight warrants more than scientific scrutiny — it demands a reckoning with first principles.

Sunlight is not a pollutant. It is the original engine of life.

And yet, in the race to mitigate climate change, we are told that injecting particles into the stratosphere to reflect sunlight back into space might be necessary. The logic is simple, the risks profound. Reduce solar radiation, and you cool the Earth. But what else do you do?

You undercut solar panel yields, including those funded by government grants and individual savings alike. You suppress photosynthesis in farming regions, risking lower crop yields in a world already strained by food insecurity. You disrupt rainfall patterns, especially in equatorial and monsoonal zones. You reduce the availability of natural vitamin D, just as our GPs urge us to get more sunlight, not less.

You dim the world, literally and figuratively.

And all of it without a referendum. Without a vote. Without even a leaflet through the door.

Where is consent in this story? Where is accountability?

We are told that climate change is an existential threat, and perhaps it is. But that does not grant a government — or a consortium of scientists, or a supra-national fund — the right to conduct global-scale experiments with unknown long-term consequences, no matter how well intentioned. That is not precaution; that is hubris disguised as stewardship.

Which brings us — as all such questions eventually do — to the Nuremberg Code.

Drafted in the wake of war crimes and scientific atrocities, the Nuremberg Code was not simply a legal instrument. It was a moral declaration. It stated, for all time, that no human being should be subject to experimentation without their freely given, fully informed consent. No clever phrasing, no policy paper, no invocation of emergency, can supersede that.

Split image showing Nuremberg trial courtroom on the left and dim, cloudy skies over failing solar panels on the right, with bold text reading “Honour the Nuremberg code — Do not block out the sun”.
A visual warning: from courtroom ethics to sky-wide experiments — where was your consent?

While the Code was written for medical experimentation, its logic extends to any deliberate action that treats the population as passive subjects of a risk-laden intervention. If deploying sulphate aerosols in the stratosphere, or conducting atmospheric reflectivity trials, is not an experiment on all life — then what is it?

We must not allow ourselves to be softened into apathy by the presentation of these plans as purely scientific exercises. We must not forget that science, without ethics, becomes machinery in search of obedience. The ghost of the 20th century tells us plainly where that leads.

Consent must return to the centre of policy. Not only in medicine, but in environmental governance, data rights, digital identity, and energy strategy. To ignore consent in these spheres is not merely undemocratic — it is dangerous.

The great lie of the age is that we can offset our guilt, erase our emissions, or rebalance our planet with a few technocratic tweaks. But we are not gods. We are stewards, or we are fools. The choice is that stark.

And so, to those in government who sanction these sky-darkening schemes: remember the Nuremberg Code. Not because we seek prosecution, but because we believe you still have a conscience. Because shame, not fear, should stop you.

Because if not now, when?

Letter XIII: Blotting Out the Sun

By Martyn Walker
Published in Letters from a Nation in Decline

When the state plans to dim the sun while blanketing farmland with solar panels, only folly thrives.

I installed solar panels some years ago. A modest gesture, perhaps, but one rooted in the belief that renewable energy—particularly the power of the sun—offered a sensible path forward. The promise was straightforward: invest now, harvest the sun’s rays, lower my bills, and contribute, in some small way, to a greener future.

Imagine, then, my reaction upon learning that the government is now considering blotting out the sun.

I do not exaggerate. At Westminster, serious people are discussing the allocation of billions to solar geoengineering—spraying fine particulates into the atmosphere to reflect sunlight away from the Earth, cooling the planet in the process. Sulphur dioxide is the preferred agent, mimicking the effect of volcanic eruptions, lowering global temperatures, and, we are told, sparing us from climate catastrophe.

At the same time, those same serious people are approving hundreds of thousands of acres of farmland for conversion into solar farms. Arable fields, once the source of our food, will be turned into glinting expanses of silicon and glass—desperate to capture the very sunlight the state proposes to dim.

Which is it? Are we to harvest the sun or hide from it?

This is policy schizophrenia at its finest. On one hand, we are to bow before the gods of net zero, covering our green and pleasant land with solar panels. On the other, we are to fund atmospheric experiments that will diminish the very light those panels need to function. The left hand builds; the right hand dismantles.

But this is more than a contradiction. It is the arrogance of central planning, an affliction that has toppled empires, destroyed livelihoods, and now threatens to snuff out the sun’s warming rays.

History is not short of warnings. In the Soviet Union, one Trofim Lysenko convinced Stalin that science itself could be bent to ideology. Genetics was bourgeois nonsense, he claimed, and crops could be trained—like loyal Party members—to thrive in hostile environments if only they were exposed to the correct conditioning. Real scientists, those who objected, were purged. Their warnings ignored. The result? Agricultural collapse, famine, and death on an industrial scale.

The lesson? When policy bends science to ideology, crops fail and people starve.

Geoengineering smells of the same hubris. The climate models, neat as they are, do not account for the complex choreography of atmosphere, ocean, and biosphere. The Earth is not a thermostat, waiting for a bureaucrat to dial in the desired temperature. There is no slider bar for unintended consequences.

Consider CFCs—chlorofluorocarbons. Once hailed as a miracle of modern chemistry, powering refrigeration, aerosols, and industrial processes. Until, decades later, scientists discovered they were quietly eating away at the ozone layer, exposing us to dangerous levels of ultraviolet radiation. It took an extraordinary global effort—the Montreal Protocol—to halt the damage. The unintended consequence of human ingenuity.

Now, we propose to tamper with the atmosphere once again. To spray particles into the sky, with only the faintest grasp of what might follow. Droughts in one region, floods in another. Failed harvests. Shifts in monsoon patterns. The arrogance of assuming we can control a global system as intricate as the climate without consequence is staggering.

And all this while tearing up farmland to make way for solar panels, sacrificing food security for energy generation, only to dim the light that powers them.

It is the insanity of the moment, yes—but also the failure to learn from history. Grand schemes, unmoored from reality, sold on visions of salvation but delivered through wreckage and regret.

The late pathologist’s words echo: Humans are tropical creatures. Leave a man naked outside at 20°C, and he will die from exposure. We are built for warmth, for sunlight. The sun is not our enemy. It is our origin.

This is a nation in decline: dimming the sun, sterilising the soil, trading common sense for ideology. No thought for consequence. No humility before the complexity of life.

I do not ask for much. Protect the farmland. Let the sun shine. Reject the delusion that we can reorder the heavens by committee. We are not gods, and this is not our playground.

When the crops fail and the skies darken, there will be no bureaucrat to blame but ourselves.



🔬 UK Government Initiatives on Solar Geoengineering

  • UK Scientists to Launch Outdoor Geoengineering Experiments
    The Guardian reports on the UK’s £50 million funding for small-scale outdoor experiments aimed at testing solar radiation management techniques, such as cloud brightening and aerosol injections. Critics express concerns about potential environmental risks and the diversion from emission reduction efforts. (UK scientists to launch outdoor geoengineering experiments)
  • Exploring Climate Cooling Programme
    An overview of the UK’s climate engineering research initiative, detailing the government’s £61 million investment in solar radiation management research, including methods like stratospheric aerosol injection and marine cloud brightening. (Exploring Climate Cooling Programme)
  • The UK’s Gamble on Solar Geoengineering is Like Using Aspirin for Cancer
    A critical opinion piece likening the UK’s investment in solar geoengineering to treating cancer with aspirin, highlighting the potential dangers and ineffectiveness of such approaches in addressing the root causes of climate change. (The UK’s gamble on solar geoengineering is like using aspirin for cancer)

🌾 Solar Farms and Agricultural Land Use


🗣️ Critical Perspectives and Policy Analysis

  • Why UK Scientists Are Trying to Dim the Sun
    The Week provides an overview of the UK’s funding for controversial geoengineering techniques, exploring the scientific rationale and the ethical debates surrounding these interventions. (Why UK scientists are trying to dim the Sun | The Week)
  • Analysis: Plans to Cool the Earth by Blocking Sunlight Are Gaining Momentum but Critical Voices Risk Being Sidelined
    UCL’s analysis warns of the rapid advancement of solar geoengineering research without adequate consideration of dissenting opinions and the potential for self-regulation leading to dangerous outcomes. (Analysis: Plans to cool the Earth by blocking sunlight are gaining …)
  • Solar Geoengineering Not a ‘Sensible Rescue Plan’, Say Scientists
    Imperial College London reports on a study indicating that reflecting solar energy back to space could cause more problems than it solves, questioning the viability of solar geoengineering as a climate solution. (Solar geoengineering not a ‘sensible rescue plan’, say scientists)

Metadata

Letter Number: XIII
Title: Blotting Out the Sun
Collection: Letters from a Nation in Decline
Author: Martyn Walker
Date: 28 April 2025
Word Count: 1,210


BISAC Subject Headings

POL044000: Political Science / Public Policy / Environmental Policy
SCI026000: Science / Environmental Science (incl. Climate Change)
TEC031010: Technology & Engineering / Power Resources / Solar
BUS032000: Business & Economics / Infrastructure
SOC055000: Social Science / Agriculture & Food Security
SCI092000: Science / Ethics (incl. Environmental Ethics)


Library of Congress Subject Headings (LCSH)

Solar Energy—Government Policy—Great Britain
Geoengineering—Environmental Aspects—Great Britain
Agriculture and Energy—Great Britain
Central Planning—Political Aspects—Great Britain
Environmental Policy—Moral and Ethical Aspects
Food Security—Great Britain
Climatic Changes—Moral and Ethical Aspects