Greenhouse Planet reveals the stakes of increased carbon dioxide for plants, people, and ecosystems—from crop yields to seasonal allergies and from wildfires to biodiversity. The veteran plant biologist Lewis H. Ziska confronts the claim that “CO2 is plant food,” showing why it is deeply misleading.

Lewis H. Ziska is associate professor of environmental health sciences at Columbia University’s Mailman School of Public Health. He served for nearly twenty-five years as a scientist at the U.S. Department of Agriculture, resigning in 2019 to protest interference by the Trump administration with his research into the effects of rising carbon dioxide on rice cultivation. His books include Agriculture, Climate Change, and Food Security in the Twenty-First Century: Our Daily Bread (2017).

Biologist Ziska separates fact from fiction in this impassioned take on carbon dioxide’s ‘fundamental importance and existential consequences’ for plantlife. Climate activists will savor this rebuttal to bunk science.

Barbara Freese, author of Industrial-Strength Denial: Eight Stories of Corporations Defending the Indefensible, from the Slave Trade to Climate Change:
Ziska draws attention to an often overlooked world-threatening problem—that carbon emissions from burning fossil fuels are changing a fundamental parameter of global plant growth. A fascinating and important book.

Michael P. Hoffmann, professor emeritus, Cornell University, and author of Our Changing Menu: Climate Change and the Foods We Love and Need:
Anyone interested in how the plants we depend on for life are changing must read Greenhouse Planet. A witty yet deeply concerning story about how increasing carbon dioxide is altering our food, drugs, and ecosystems, yet we are failing to investigate what this all means to the basis of life and our future.

Bill McKibben, author of The Flag, the Cross, and the Station Wagon:
The idea that more carbon dioxide will "green the world" has been endlessly promoted by the fossil fuel industry and its friends. But as Ziska demonstrates in a straightforward and understandable fashion, this is by no means a slam-dunk good thing; in fact, the implications may turn out to be almost as devastating as the rise in temperatures that come with CO2. Oh, and he also provides a fascinating reflection on the stupefying politicization of modern science. On every count this is a crucial little book.

Ruth DeFries, cofounding dean, Columbia Climate School, and author of What Would Nature Do? A Guide for Our Uncertain Times:
Greenhouse Planet is not just another book about climate change. Ziska unpacks the science and politics of the climate-denying mantra that carbon dioxide feeds plants and greens the planet. More poisonous poison ivy, creeping kudzu, super weeds, and protein-deprived bees are some of the nuances that shatter the simplistic talking point. Fun to read and completely accessible, this book will help both scientists and nonscientists deepen their knowledge about the far-ranging effects of our changing atmosphere on the plants that underpin our very survival.