Climate188
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From Copenhagen to Paris: Holding onto Hope
I don’t believe for a second that we are on the brink of global destruction. We are on the brink of a global re-distribution and whole scale re-balancing of global goods and bads. But we have been there before and survived.
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Exploring Beneath Earth’s Changing Ice Sheets
If just the West Antarctic Ice Sheet were to melt, it would raise global sea level by 6 meters. That’s more than a theoretical problem. West Antarctica is losing ice mass, and scientists are worried.
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U.S. Could Cut Per Capita Greenhouse Emissions 90% by 2050, Says Report
The report says it is possible to revamp the energy system in a way that reduces per capita carbon dioxide emissions from 17 tons per person currently to 1.7 tons in 2050, while still providing all the services people expect, from driving to air conditioning.
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From Copenhagen to Paris: Low Expectations
As we head to Paris, the expectations are profoundly lower. The national commitments that countries are putting on the table do not add up to nearly enough to keep us within 2 degrees; instead the plan is to come back every five years and hopefully do better. … It is still mathematically possible to stay…
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How Bad Will this El Niño Be? Worse Than You May Think
Today’s El Niño is unfolding over a world that is in many ways more vulnerable than the world of 1997-1998. Just as today’s climate continues to generate extremes without historical precedent, we are starting to see elements of social vulnerability also without historical precedent. That is an alarming combination.
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Climate Is Changing Fast in West Antarctica
Fast-rising temperatures on the Antarctic Peninsula are having an impact on the ice and marine life, and providing clues about future ecosystem changes elsewhere.
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From Copenhagen to Paris: Likely to Fail Again?
All of the pledges made in Paris will be voluntary. However, countries have not always fulfilled their pledges in the past, and it isn’t obvious that this agreement is going to cause countries to behave very differently in the future.
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Peat Fires Choking Southeast Asia Pose a New Threat to Global Climate
The Indonesian peat fires that have been choking cities across Southeast Asia with a yellow haze are creating more than a local menace—burning peat releases immense stores of CO2, contributing to global warming.
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Before Paris, Cause for Optimism
If the international community were to fully understand the threat of climate change, and the likely cost of mitigation and adaptation, perhaps we would commit to continued tax breaks and incentives, and propel the renewable energy transition toward completion. In the long run, I am sure this would be less expensive than coping with the…
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