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Cool the Planet: A Blueprint for Earth
Paperback
Publisher: Dipika Sharma
Published: Jun 7 2026
Pages: 312
Weight: 0.92
Height: 0.70 Width: 6.00 Depth: 9.00
Language: English
The planet is running a fever. The science is settled, the data is unambiguous, and the consequences are already being felt by billions of people across every continent and every ocean. But this is not a book about what has been lost. It is a book about what can be done.
Cool the Planet: A Blueprint for Earth is a landmark work of environmental science written for the curious, the concerned, and the determined. Drawing on decades of peer-reviewed research spanning nine distinct domains of the Earth system, author Dipika Sharma builds a rigorous, evidence-based case for how humanity can genuinely reduce Earth's mean surface temperature through a coordinated, multi-domain strategy she calls the 10-Degree Covenant. Not through a single technological miracle. Not through wishful thinking. But through the disciplined, sustained application of tools and approaches that science has already validated and that the world already possesses.
The book moves through nine deeply researched chapters, each examining one major domain of cooling potential. Forests regulate temperature through evapotranspiration, cloud formation, and biogenic chemistry, and restoring them at scale delivers measurable regional cooling of two degrees Celsius or more. Oceans absorb over ninety percent of excess planetary heat and harbor intervention possibilities, from marine cloud brightening to ocean alkalinity enhancement, that could reduce radiative forcing under careful governance. The atmosphere itself can be engineered, through stratospheric aerosol injection and cirrus cloud thinning, to reflect more solar radiation, though the ethics and governance of doing so demand the most sophisticated international frameworks ever assembled. Cities, home to more than half of humanity, can be redesigned through green infrastructure, cool roofs, and urban forest programs to be measurably cooler and more livable. The soil, the permafrost, and the peatlands hold more carbon than the entire atmosphere and are being protected or destroyed by choices made right now. Agriculture, covering nearly half of all land on Earth, can be transformed from a net emitter into a net sequester while simultaneously cooling the land surface. And technology, from direct air capture to enhanced weathering to radiative cooling materials, provides an expanding engineered toolkit that complements every natural approach described in the preceding chapters.
Sharma writes with scientific precision and genuine human warmth, grounding each chapter in the work of hundreds of researchers while keeping the argument fully accessible to the engaged general reader. She does not minimize the scale of the challenge or the political and economic barriers that stand between current reality and the cooler world the science describes. She is honest about risk, honest about uncertainty, and honest about the governance failures that have allowed warming to proceed further than it should have. But she is equally honest about the evidence, and the evidence is clear: the tools exist, the science is sound, and the pathway, though demanding, is real.
Cool the Planet is essential reading for anyone who wants to move beyond the diagnosis of climate change and into the evidence for its remedy. The fever can be broken. This book explains how.
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