climate change

Enhanced infrared satellite imagery (VIIRS) of Hurricane Patricia, at ~4 AM Thursday October 22 (left) and ~5 AM Friday October 23 (right). Brighter colors represent higher cloud tops, indicating a stronger storm.

Extreme Power: Rapidly Intensifying Cyclones Drive Odd Phenomenon

In studying climate and tropical cyclones, researchers find a weather phenomenon at play.

by |February 4, 2016
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In the Southern Ocean, a Carbon-Dioxide Mystery Comes Clear

Twenty thousand years ago, low concentrations of carbon dioxide in the atmosphere allowed the earth to fall into the grip of an ice age. But despite decades of research, the reasons why levels of the greenhouse gas were so low then have been difficult to piece together. New research, published today in the leading journal Nature, shows that a big part of the answer lies at the bottom of the world.

by |February 3, 2016
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
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Without the Montreal Protocol, More Intense Tropical Cyclones

Using one of the most advanced atmospheric computer models available, scientists compared our expected future with a scenario in which ozone-depleting substances had never been regulated.

by |February 1, 2016
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Listen in: Sachs & Cohen on the Paris Agreement

Earth Institute Director Jeffrey Sachs sat down with Brian Lehrer at WNYC on Tuesday to talk about the Paris climate agreement and what happens now.

by |December 16, 2015
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
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What is the U.S. Commitment in Paris?

The United States has joined 185 countries in promising to curb carbon dioxide and other greenhouse gas emissions, develop other ways to mitigate the impacts and to make communities more resilient to climate change. So what exactly is the United States proposing to do?

by |December 11, 2015
Kiribati faces the prospect of eventual inundation from sea level rise. Photo: Eskinder Debebe/UN

Optimism, But Also a Hard Bottom Line for Island States

“Reaching an agreement would firstly mean an increase in awareness for the particular situation faced by small island developing states. States such as Kiribati are on the front line of climate change since they are already experiencing its effects, and an agreement would enhance recognition of [their] vulnerability.”

by |December 10, 2015
Iceberg off Antarctica. Photo: NOAA

Sea Level Rise: How Much, How Fast?

By studying modeled climate evidence from the last interglacial period, the team concluded that the warming going on today risks setting off “feedbacks” in the climate system.

by |December 10, 2015
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What Is Ocean Acidification & Why Does It Matter?

Excess carbon dioxide absorbed into the oceans is starting to have profound effects on marine life, from oysters to tiny snails at the base of the food chain. Our scientists explain the changes and what they are learning about ocean acidification in the past.

by |December 9, 2015