Climate change poses an extraordinary threat to the planet and its inhabitants.
What Is Climate Change?
Why the climate is changing, what it means for us, and what we can do about it.
The Greenhouse Effect
The world is getting warmer. What role do greenhouse gas emissions play, and why is this cause for concern?
as many climate-related natural disasters occurred in 2016 than in 1980.
Source: "Seven Things to Know About Climate Change," National Geographic, March 30, 2017.
Why Scientists Are Watching Greenland
In Greenland, climate change has created a vicious cycle of warming—and it may never stop.
Climate Change and the Coffee Industry
Climate change is not just an environmental problem. It is also an economic one.
Sources of Energy: A Comparison
Turning toward cleaner energy sources means factoring in economic and energy needs alongside environmental ones.
Who Releases the Most Greenhouse Gases?
Who is at the top depends on how you interpret the data.
Who is Responsible for Climate Change?
Developed and developing countries disagree.
The Paris Agreement
What actions are countries taking to address the global threat of climate change?
of the United States’ 2020 greenhouse gas emissions goals could be met if Americans switched all beef in their diet with beans.
Source: Helen Harwatt, Joan Sabaté, Gidon Eshel, Sam Soret, and William Ripple, “Substituting beans for beef as a contribution toward US climate change targets,” Climatic Change 143 (2017): 261.
Climate Change Module Assessment
Questions to check your understanding.
Climate Change Reading List
Supplemental readings and other resources.
How Climate Change Affects You
Source: Mohamed Abd El Ghany/Reuters
The Uninhabitable Earth, Annotated Edition
If enough action is not taken, climate change’s effects on the earth will be devastating. These are the worst-case scenarios.
Source: Kieran Doherty/Reuters
What’s Really Warming the World?
While some people may deny that human activity is driving climate change, data from NASA reveals the truth.
Source: Pascal Rossignol/Reuters
The Great Nutrient Collapse
The increasing amount of carbon dioxide in the atmosphere could have dire consequences for the global food supply.
Source: Luke MacGregor/Reuters
Yes, The Climate Has Always Changed. This Comic Shows Why That’s No Comfort.
Randall Munroe, the author of the webcomic XKCD, finds a creative way to visualize global warming.
More From CFR
The Emerging Arctic
Photo: Kathryn Hansen/NASA via Reuters
Deforestation in the Amazon
Photo: Nacho Doce/Reuters
Climate Change Challenges