May 15, 2025

The Fingerprints Climate Change Leaves Behind

A top climate-attribution scientist helps journalists understand and explain them.

Mark Hertsgaard
Climate Crisis Forest Fire

People carry a body, covered with a blanket, as they conduct a search-and-rescue operation after the second bombardment of the Israeli army in the last 24 hours at Jabalia refugee camp in Gaza City, Gaza, on November 1, 2023.


(Benjamin Fanjoy / Getty Images)

Friederike Otto is a leading practitioner of arguably the most important development in climate science in many years: attribution science. Specialists like Otto can now calculate how much responsibility man-made global heating has for a given extreme weather event. The brutal heat wave that scorched India and Pakistan in 2022, for example, was made 30 times more likely by global warming, Otto and her colleagues at the nonprofit World Weather Attribution group found.

Like police officers dusting a crime scene for fingerprints, attribution science reveals what role climate change played in a given weather disaster.

For journalists, such calculations are invaluable. Attribution science equips us with the data to connect the dots between climate change as a distant abstraction and climate change as a current reality—and to do so quickly, when our audiences are feeling those impacts. Which means journalists can dispense with the once-standard line that climate change cannot be linked to any single event, only to long-term trends. Attribution science changes that.

Journalists will find Otto’s book Climate Injustice useful for its descriptions of how attribution science works—how do scientists know what they know?—as well as its limitations. Scientists can measure climate change’s influence on heat waves with precision, she explains. Much harder, at least with today’s tools, is to calculate its influence on droughts, floods, and other precipitation-related events.

Trained as a physicist, Otto ventures beyond physical science in this book to make a moral and practical argument grounded in economics, history, ethics, and public policy. She also offers sharp observations about how journalists report the climate story.

She has no patience for coverage that blames individuals, as with shaming about air travel, but ignores far more destructive actions by ExxonMobil and other corporate polluters. She reports that nowhere are extreme heat events deadlier than in Africa, and accuses the Global North media of ignoring such events because their customers are not among the victims.

The media needs “to create new narratives” for the climate story, Otto writes. Don’t illustrate heat wave coverage with photos of kids licking ice creams; tell the stories of outdoor workers suffering from heat exhaustion and highlight how tree-shaded streets and community cooling centers can save lives. Ground climate coverage in science, but humanize the storytelling—and offer solutions.

Climate change is, of course, a physical phenomenon—the carbon dioxide released when oil, gas, or coal is burned traps heat in the atmosphere. But the way humans experience climate change, Otto argues, is a social phenomenon, shaped by differences in wealth, race, gender, and more. “The people who die are those with little money who can’t readily obtain all the help and information they need,” she writes.

A tone of controlled outrage animates Otto’s prose as she maintains that “that doesn’t have to be the case.” Humans have the know-how and money to protect nearly everyone; those in power simply have other priorities. The question, she believes is, “How many more human lives, how many more coral reefs, how many more insects will we allow ourselves to lose to the short-term continued use of comparatively cheap fossil fuels in the Global North?”

Covering Climate Now has long made similar suggestions about the framing of the climate story. With summer fast approaching in the Northern Hemisphere and climate-fueled disasters getting more frequent and destructive, newsrooms will have plenty of opportunities to do better in the weeks ahead.

Time is running out to have your gift matched 

In this time of unrelenting, often unprecedented cruelty and lawlessness, I’m grateful for Nation readers like you. 

So many of you have taken to the streets, organized in your neighborhood and with your union, and showed up at the ballot box to vote for progressive candidates. You’re proving that it is possible—to paraphrase the legendary Patti Smith—to redeem the work of the fools running our government.

And as we head into 2026, I promise that The Nation will fight like never before for justice, humanity, and dignity in these United States. 

At a time when most news organizations are either cutting budgets or cozying up to Trump by bringing in right-wing propagandists, The Nation’s writers, editors, copy editors, fact-checkers, and illustrators confront head-on the administration’s deadly abuses of power, blatant corruption, and deconstruction of both government and civil society. 

We couldn’t do this crucial work without you.

Through the end of the year, a generous donor is matching all donations to The Nation’s independent journalism up to $75,000. But the end of the year is now only days away. 

Time is running out to have your gift doubled. Don’t wait—donate now to ensure that our newsroom has the full $150,000 to start the new year. 

Another world really is possible. Together, we can and will win it!

Love and Solidarity,

John Nichols 

Executive Editor, The Nation

Mark Hertsgaard

Mark Hertsgaard is the environment correspondent of The Nation and the executive director of the global media collaboration Covering Climate Now. His new book is Big Red’s Mercy:  The Shooting of Deborah Cotton and A Story of Race in America.

More from The Nation

Salmon swimming against the current to spawn in the streams in Alaska in August 2025.

The Fight for the Last Wild Salmon The Fight for the Last Wild Salmon

In Alaska, the last stronghold for wild salmon, Native tribes and conservationists are working to save the fish from both climate change and decades of corporate greed.

StudentNation / Colin Warren

What Your Cheap Clothes Cost the Planet

What Your Cheap Clothes Cost the Planet What Your Cheap Clothes Cost the Planet


A global supply chain built for speed is leaving behind waste, toxins, and a trail of environmental wreckage.

Feature / Sachi Mulkey and Rebecca McCarthy

Chris Packham addresses the audience at a National Emergency Briefing on the climate and nature crisis, at Central Hall Westminster on November 27, 2025, in London, England.

The UK’s Climate National Emergency Briefing Should Be a Wake-Up Call to Everyone The UK’s Climate National Emergency Briefing Should Be a Wake-Up Call to Everyone

The briefing was a rare coordinated effort to make sure the media reflects the science: Humanity’s planetary house is on fire, but we have the tools to put that fire out.

Mark Hertsgaard

A man on a rooftop looks at approaching flames as the Springs fire continues to grow on May 3, 2013, near Camarillo, California.

AI Will Only Intensify Climate Change. The Tech Moguls Don’t Care. AI Will Only Intensify Climate Change. The Tech Moguls Don’t Care.

The AI phenomenon may functionally print money for tech billionaires, at least for the time being, but it comes with a gargantuan environmental cost.

Juan Cole

People participate in a demonstration in front of the main entrance of COP30 in Belém, Brazil, on November 10, 2025.

Backsliding in Belém Backsliding in Belém

Petrostates at COP30 quash fossil fuel and deforestation phaseouts.

Mark Hertsgaard

Nun stands in front of Cop30 Mural in Brazil

Wake Up and Smell the Oil. Your Nation’s Military Is Hiding Its Pollution From You. Wake Up and Smell the Oil. Your Nation’s Military Is Hiding Its Pollution From You.

A fact all but ignored at COP30.

Ashley Gate