Sustainability91
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New Rules to Hold Mining Industry Accountable for Cleanups
A federal court has ordered the U.S. Environmental Protection Agency to ensure that mining companies provide financial assurance that they can pay for any harm to the environment from their operations.
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Going Electric Adds up to a Good Idea for NYC Buses
New York City Transit is considering adding electric buses to its fleet. The purchase price of electric buses is higher than for diesel buses-, but using them would reduce harmful emissions. So is this a good idea?
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Why Institutional Investors Support Transparency
The increasing technical risks of global natural resource development have been well-documented. What is less understood but no less important are the growing political, regulatory and reputational risks involved in meeting the world’s growing resource needs.
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Students Travel to the Middle East
Students from Columbia University and Tel Aviv University are traveling through Jordan and Israel to learn about environmental challenges facing the two countries. They’ll be posting here about their experiences. You can also follow them on social media at #CUJordanIsrael2016.
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The False Trade-Off Between Economic Growth and Environmental Protection
The investment in environmental clean-up often stimulates other upgrades that enable businesses to more effectively compete in a global economy. Moreover, a clean environment reduces illness and that reduces the need for expensive health care.
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Students Assess City Greenhouse Gas Reduction Tools
Students in the Master of Public Administration in Environmental Science and Policy (MPA-ESP) program worked this past semester to analyze city-level strategies for reducing greenhouse gas emissions.
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New York City’s Bag Fee and the Circular Economy
While the reduction and eventual elimination of fossil fuel use is a key element of such an economy, so too are the public policies and public-private partnerships needed to collect and reuse discarded products and packages. Bag bills and bottle bills can help develop these capacities. In most of the United States, these ideas have…
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Columbia, What Is Our Role in Responding to Climate Change?
We often think of the fight against climate change on a national or international level, but what can we do as a community?
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Practical Solutions to Sustainability Issues: Undergraduate Capstone Projects
On April 29, students in the Undergraduate Program in Sustainable Development presented practical solutions to sustainability issues and challenges faced by real world clients.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
