Climate219
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What’s the Real Story With Clean Coal?
The Obama administration will propose new rules to limit carbon emissions from coal-fired power plants. But is “clean coal” technology up to the job?
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Science in the Streets
What motivates artists may be different than what motivates scientists, but they can investigate similar ideas. Artists interested in sustainability issues might team up with scientists to make sure their work is accurate. Scientists benefit from art projects that communicate their research to a broader audience than would normally read a journal article. However, the…
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Managing Water in a Dry Land
Since 2010, the Earth Institute’s International Research Institute for Climate and Society along with UNESCO and their colleagues in Chile have been working with Elqui’s water authority to help them use seasonal forecasts as way to better allocate water and prepare for droughts.
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Climate Effects on NYC May Move Faster Than Previously Forecast
The impact of climate change on New York City could be even more severe than previously thought, putting more people at risk from increasingly frequent floods and heat waves, according to a report by the New York City Panel on Climate Change that was released Monday.
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400 ppm World, Part 2: Rising Seas Come with Rising CO2
Every indication is that thermal expansion will not dominate rates of sea-level rise in the future. As Earth’s climate marches toward equilibration with present-day CO2 levels, the climate will continue to warm. And this warming threatens the stability of a potentially much, much larger source for sea-level rise — the world’s remaining ice sheets.
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Genetic Maps Of Ocean Algae Show Bacteria-Like Flexibility
May Hold Clues to Future Climate
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400 ppm World, Part 1: Large Changes Still to Come
Why should society care that CO2 is now as high as 400 ppm? The reasons are multiple, but all trace back to the relationship between CO2 and temperature.
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Climate in the Peruvian Andes: From Early Humans to Modern Challenges
Twice humans have witnessed the wasting of snow and ice from Peru’s tallest volcano, Nevado Coropuna—In the waning of the last ice age, some 12,000 years ago, and today, as industrial carbon dioxide in the air raises temperatures again. As in the past, Coropuna’s retreating glaciers figure prominently in the lives of people below. In…
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The Environment as a Tool for Peace in the Middle East
Understanding the Middle East conflict is not an easy task, and adding an environmental component to the puzzle doesn’t make it any easier. Students in the Regional Environmental Sustainability in the Middle East program, having gone through 16 days of an 18-day trip to the region, now see clearly how complex the issues actually are.…
COP31, the 2026 United Nations Climate Change Conference, aims to advance dialogue, strengthen consensus, and accelerate climate action on a global scale. From November 9–20, 2026 in Antalya, Türkiye, heads of state, ministers, scientists, business leaders, and civil society will gather to advance efforts in emission targets, climate finance, and adaptation and resilience. Once again, our experts, students, and global thought leaders from Columbia Climate School and across Columbia University are contributing to key events, sharing insights, and helping shape the dialogue toward ambitious, science-based solutions. Learn More
