Climate change literature tends to fall into two categories: books that establish the horror of the crisis and books that advocate for political or technological silver bullets. *Drawdown* is neither. It is a systematic, peer-reviewed inventory of every known solution to climate change, ranked by how much carbon dioxide equivalent each would remove from the atmosphere if implemented at scale. It is the most useful book on climate change ever published.
The Method
Paul Hawken assembled a team of researchers and scientists who spent years modelling the carbon reduction potential of 100 specific solutions — from wind turbines and solar panels to reduced food waste, educating girls, and managing coastal wetlands. Each solution is presented with its estimated cost, estimated savings over thirty years, and the amount of CO₂ equivalent it would avoid or sequester if broadly adopted.
The methodology is transparent and the data is publicly available. Where projections are uncertain, the team used conservative estimates and disclosed their assumptions. This makes the book more trustworthy than most climate reporting, which often presents cherry-picked figures without context.
What the Rankings Reveal
The results surprise almost everyone. The number one solution — by a significant margin — is not renewable energy or electric vehicles. It is refrigerant management: recovering and destroying the hydrofluorocarbon gases used in air conditioners and refrigerators, which are thousands of times more potent as greenhouse gases than CO₂. Nobody is marching in the streets about refrigerants, but acting on them would do more than almost anything else we could do.
Other surprises near the top: reduced food waste (third), plant-rich diet (fourth), and educating girls (sixth, because educated women have fewer children and generate less carbon over their lifetimes). The book systematically dismantles the assumption that climate change is primarily an energy problem.
We are the first generation to feel the impact of climate change, and the last generation that can do something about it. But we have everything we need to act. The solutions already exist.
— Paul Hawken, Drawdown
6 Key Ideas From This Book
One third of all food produced globally is wasted. If global food waste were a country, it would be the third largest emitter of greenhouse gases. Reducing food waste is the third most impactful climate solution — and largely within individual and institutional control right now.
Solutions related to land — forests, soils, wetlands, grasslands — account for the largest single sector in the book. How we use land to absorb or emit carbon is as consequential as our entire energy system.
Educating girls and providing family planning are high-impact climate solutions. Women with access to education and reproductive health services choose smaller families, which reduces total emissions. Climate justice and gender justice are inseparable.
The book shows that many of the highest-impact solutions are distributed — rooftop solar, regenerative agriculture, indigenous land management — rather than centralised. This challenges the assumption that climate change requires a few large technological fixes.
The majority of solutions in the book save money over their lifetimes, often substantially. The barrier to implementation is not economics but politics, incumbency, and the failure of markets to price carbon correctly.
"Drawdown" — the point at which atmospheric CO₂ begins to decline — is achievable through existing solutions if implemented at speed and scale. This is not optimism but arithmetic. The book provides the arithmetic.
Any Weaknesses?
The data ages quickly. Drawdown was published in 2017 and the world has changed significantly since — solar and wind costs have fallen faster than the models predicted, some solutions have scaled more than expected, and the urgency of the situation has increased. A revised edition was published in 2020, but even that is becoming dated.
The book is also deliberately apolitical — it presents solutions without naming the political and economic interests that block them. This makes it useful as a reference but limited as a guide to action. Knowing that refrigerant management is technically the most important solution tells you nothing about how to fight the HVAC industry’s lobbying against regulation.
Anyone who has felt overwhelmed by climate change and needs to understand what can actually be done — not as aspiration but as enumerated, costed, quantified action.
Silent Spring by Rachel Carson for the historical context of why regulation of harmful chemicals is so difficult, and Zero Waste Home by Béa Johnson for the individual-scale actions that complement systemic solutions.
Investment bankers and institutional fund managers. The book's economic modelling shows which climate solutions are most cost-effective, making it directly useful for green finance and impact investing decisions.
The ranking structure means the book reads more as reference than narrative. Many readers work through it slowly, returning to specific chapters rather than reading cover to cover. This is entirely appropriate — treat it like a well-researched atlas.
Frequently Asked Questions
Is Drawdown worth reading?
Drawdown transforms climate anxiety into something more productive: informed urgency. It answers the question "but what do we actually do?" with the most rigorous answer yet attempted. The data is aging, but the framework — quantified, ranked, costed solutions — is the right one, and the book remains the essential starting point for anyone who wants to act rather than just despair.
Who should read Drawdown?
Anyone who has felt overwhelmed by climate change and needs to understand what can actually be done — not as aspiration but as enumerated, costed, quantified action.
What is Drawdown about in one sentence?
Climate change literature tends to fall into two categories: books that establish the horror of the crisis and books that advocate for political or technological silver bullets.
The Verdict
*Drawdown* transforms climate anxiety into something more productive: informed urgency. It answers the question "but what do we actually do?" with the most rigorous answer yet attempted. The data is aging, but the framework — quantified, ranked, costed solutions — is the right one, and the book remains the essential starting point for anyone who wants to act rather than just despair.
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