Pollution3
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Environment, Jobs, and President-Elect Trump
While many people around the world are concerned about President-elect Trump’s threat to withdraw from the Paris climate accord, I am far more concerned about the possible signal to American corporations and jurisdictions that enforcement of our air, water, and toxic rules would be relaxed under EPA’s new administrator.
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Sustainability Policy Is Taking Hold in China
I left China encouraged by the widespread receptivity to the theory and practice of sustainability, but aware of the huge challenge that lies ahead. As we flew from Guiyang to Beijing for the return flight home, I looked down and saw a countryside dotted with scores of windmills. The transition from a coal-based economy to…
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The Pope’s Challenge on Climate Change
Pope Francis’s broad-ranging encyclical warns that we are destroying our common home and face an immense and urgent challenge to protect it. But it goes far beyond just the subject of climate change, calling for a holistic and sustainable future.
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Spring Courses in Conservation, Ecology & Policy
The Earth Institute Center for Environmental Sustainability (EICES) at Columbia University provides executive training in environmental sustainability through courses in science, economics and policy. We invite you to join our leading experts and practitioners, strengthen your understanding of human-ecosystem interactions, and become an effective environmental leader and decision-maker.
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Nature’s Toxic Crusaders
Can mushrooms help clean up oil spills? Can oysters filter sewage pollution? Industrial waste is being injected into the planet’s soil and water as a result of human activity. Pioneers in the field of conservation and sustainability are employing nature’s own biological task force to help clean up.
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Ripple Effect Author Talks Efficiency; Cleanup
The outlook for global water is bleak, but Alex Prud’Homme still believes in the power of human ingenuity.
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Paulie, Jimmy and Vinny on NYC’s Water Future
New York City’s trio of water and sewer czars, explain the reasons behind rising rates.
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A Solution to the Problem of Lawns?
Given the growing intensity of the global water crisis, to spend such enormous amounts of water on something that for practical purposes does little more than enslave millions of American homeowners by chaining them to their lawnmowers and sprinklers every Saturday…
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Changing Litterbugs One Wave at a Time
As the mid-Pacific trash island grows, forces are at work to change people’s minds about how they may be adding to it.
October 28, 2026 is Columbia Giving Day! Your gift to Columbia Climate School helps advance interdisciplinary research, educate the next generation of leaders, and transform bold ideas into real-world solutions for climate, Earth, and society.
