Climate278
-
There Was No Big Bang, and There Won’t Be
The three pages of text that emerged after years of preparation and two weeks of intense negotiation in Copenhagen signally fail to address what the document correctly calls “one of the greatest challenges of our time” – global climate change. To many, the Copenhagen Accord will seem a setback; actually, it is a continuation of…
-
Cities Are Moving Ahead
Although critics have given harsh assessments of from the international summit at the Bella Center in Copenhagen, most probably would have concurred with the positive message flowing out of Copenhagen City Hall, the site of the Climate Summit for Mayors. The mayors’ summit emphasized local action to address climate change […]
-
The (Welcome) End of Unanimity
The most common reaction to Copenhagen is dismay at the failure to reach binding emission reduction targets. But Copenhagen actually represents a major success. Why? It signals, finally, the abandonment of an experiment in hyper-multilateralism that never had much chance of success. From the early days of the UN Framework Convention on Climate Change, the…
-
The Many Fights Ahead
Last week ended with high drama and muddled results. As Friday’s workday began, Danish television was trained on the convoy of vehicles that would take President Obama to the Bella Center as soon as Air Force One landed. The landing took place around 9 a.m., and the president was immediately taken to a meeting of…
-
What Does the Science Say?
The negotiations in Copenhagen have been handled by politicians and policy makers. But there would be no climate negotiations if climate scientists had not identified evidence that humans could disrupt the natural carbon cycle, and affect the climate system. The fact that some 50,000 people and the heads of most nations have come together indicates…
-
Complex Models, Simple Solutions
Everyone knows that climate change is complex. The multitude of potential impacts, the uncertainties in projections, the intersection of historical responsibilities and current political realities all make negotiations fiendishly difficult. But can the very complexity of the subject be helpful in finding solutions? The answer might be […]
-
Soot Adds to Melting of Earth’s ‘Third Pole’
Himalayan Glaciers Absorbing More Sun
-
The Current May Be Shifting
As I write this a little after midnight on Thursday, less than 24 hours remain before the close of the Copenhagen talks. Local television is playing continuous loops of an English-language TV movie (with Danish subtitles) about an evil oil company that is trying to sabotage the “Kyoto 2 talks at Calgary” by pressuring the…
-
Healthy Climate, Healthy People
As leaders debate climate policy in Copenhagen, one essential dimension has been largely left out: human health. This is a mistake for two reasons. First, one of the most compelling reasons for aggressive action is to avoid the enormous long-term health impacts likely to be felt throughout the world if we continue to push our…
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