Sunlight Reflection

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Chapters are published on Substack

Subscribe at rebrighten.substack.com to receive new chapters free in your inbox as they're released. First draft completing February 2026.

Sunlight Reflection

A short, boardroom-ready book (~40,000 words) structured for executives in insurance, banking, agriculture, shipping, energy, tourism and defence. Each chapter links to Substack when available.

Introduction

The Planet Is Going Dark

Earth dimming, the surge in heating rate, 1.5°C breached. The blanket and the mirror. Why carbon action alone is like easing off the accelerator while the road turns downhill.

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Chapter 1

When Warming Becomes Uninsurable

The business case for cooling. Insurance losses exceeding $100bn a year. "Planetary solvency" — the concept from the UK Institute and Faculty of Actuaries. How each sector faces specific climate-driven risk.

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Chapter 2

Planetary Darkening — When the World Stops Shining

Simple explanation of albedo. NASA's Norman Loeb — Earth's heating rate doubled 2005–2019. James Hansen — albedo loss equivalent to +110 ppm CO₂. Why the planet's dimming changes the risk picture.

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Chapter 3

Why Cutting Emissions Isn't Enough

Lay explanation of climate physics and the Zero Emissions Commitment, framed in terms of boardroom timelines and risk. The one-foot levee and the twenty-foot flood. Carbon as rehabilitation, not emergency treatment.

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Chapter 4

Climate Politics — How We Got Stuck

How emissions-only thinking captured institutions and left industry exposed. The history of the "halve emissions by 2030" call. How progressive climate strategy became a bet on a political miracle.

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Chapter 5

Governing Sunlight Reflection — The Albedo Accord in Summary

Clear description of what an Albedo Accord is, how it works and its guiding principles. Scope, mandate, what it is and isn't. Why narrow, technical, and business-friendly governance is the right model.

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Chapter 6

The Montreal Protocol as a Model

Lessons from ozone governance and how they translate to albedo. Conservative leadership (Thatcher, Reagan). The "ozone layer → albedo layer" analogy. Science–industry–policy feedbacks.

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Chapter 7

Solar Geoengineering — Methods, Benefits, Risks

Plain-language overview of stratospheric aerosol injection, marine cloud brightening, surface albedo and biological cooling. Why governance, not technology, is the core challenge. Balanced risk assessment.

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Chapter 8

Cooling First Makes Carbon Action Easier

How a cooler, more stable climate makes decarbonisation and carbon removal more achievable. "Cooling buys time for carbon rehab." Carbon as rehabilitation, albedo restoration as emergency stabilisation.

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Chapter 9

From Boardroom to Treaty Room

Implementation strategy and the case for an industry-backed pro-cooling lobby. Concrete paths: insurers → BIS/regulators, defence → security forums. How capital aligns with climate stabilisation.

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Chapter 10

Rebrightening Earth

A short, hopeful vision of a rebrightened, re-stabilised planet. The triple meaning of "bright" — reflective, intelligent, hopeful. A clear call to action: support the Albedo Accord.

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