Global Warming

Photo: NOAA/Stuart Rankin

El Niño and Global Warming—What’s the Connection?

The United Nations has declared 2015 the hottest year since record keeping began. It was also a year marked by the occurrence of a “super” El Niño. Are the warming temperatures and El Niño connected?

by |February 2, 2016
The climate agreement is adopted.

Understanding the Paris Climate Accord and Its Implications

On Saturday, Dec. 12, 2015, 195 countries reached a history-making agreement to reduce their greenhouse gas emissions in order to avert the direst effects of climate change. Here are some of the best and most reliable resources to help you understand the Paris accord and its implications.

by |December 15, 2015
NASA's supercomputer model created this simulation of carbon dioxide in the atmosphere.
Photo: NASA/GSFC

Six Tough Questions About Climate Change

People often ask certain tough questions about climate change— about the costs of cutting carbon emissions, the feasibility of transitioning to renewable energy, and whether it’s already too late to do anything about climate change. Laura Segafredo, manager of the Deep Decarbonization Pathways Project, answers these questions.

by |November 30, 2015
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The Paris Climate Summit: Resources for Journalists

Many experts at Columbia University’s Earth Institute are attending or closely watching the Paris climate summit. These include world authorities on climate science, politics, law, natural resources, national security, health and other fields, who can offer expert analysis to journalists. Here’s a guide to resources that journalists covering the summit can tap.

by |November 13, 2015
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From Copenhagen to Paris: Getting Beyond Talk

The climate issue seems to generate a high level of ideologically based politics, emotional rhetoric and political symbolism. It is time to move past symbols to pragmatism and political reality.

by |November 12, 2015
The difference in average surface temperatures from 1970-79 (bottom) to 2000-09 (top) due to global warming. Photo: NASA

The Paris Climate Change Conference – What You Need to Know

The United Nations Climate Change Conference, meeting in Paris from Nov. 30 to Dec. 11, brings together world leaders to craft a new international agreement to keep the average global temperature rise below 2°C by 2100. Here’s what you need to know about it.

by |November 11, 2015
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The Presidential Candidates on Climate Change

The presidential election of 2016 will determine the United States’ role in confronting the global challenge of climate change, and preparing our nation to manage its impacts for years to come. Where do the presidential candidates stand today on these issues?

by |October 26, 2015
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What the World Thinks of Climate Change

We all know that climate change can generate great debate in the United States. But what about the rest of the world?

by |July 27, 2015

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.

The global ocean buoy network has been expanding in recent years. Accounting for small, consistent offsets between temperatures measured by buoys and by ships reveals a greater global warming trend than previously calculated for the past 15 years. Image: Maintenance workers on an ocean buoy, NOAA.

‘Faux pause’

New data support the conclusion
The “hiatus” was mostly illusion…

by |June 12, 2015