A small change to climate science could make a big difference for Americans.
The world’s top scientists released their latest report yesterday warning that the Earth is on pace for severe damage from climate change. But many Americans might have a hard time understanding the report because the analysis, like those before it, talks about temperatures exclusively in Celsius.
The U.S. is among just a few countries that still use Fahrenheit temperatures. And while Americans are a relatively small audience on a global scale, they are an important one for climate science: The U.S. has historically emitted more planet-warming greenhouse gases than any other country. Improving Americans’ understanding of the issue could be crucial to any push for changes.
Why does excluding Fahrenheit matter? Most Americans lack experiences from their own lives to make sense of scientists’ warnings that the Earth could warm by up to 1.5 degrees Celsius above acceptable levels. To them, it is a small, meaningless number.
By translating that figure to its Fahrenheit equivalent — 2.7 degrees — it can take on a clearer meaning. Katharine Hayhoe, a climate scientist, uses the analogy of a fever: Think about how much worse you feel when you run a fever of 101.3 degrees Fahrenheit, 2.7 degrees above normal. That fever is the equivalent of what the planet is facing.
Most Americans can grasp that analogy because it speaks to their own experiences. They can’t do that with Celsius. “It is absolutely essential to communicate in terms and language that people understand,” said Hayhoe, who is from Canada, which uses Celsius.
The exclusion of Fahrenheit in scientific reports is not the main obstacle to more action on climate change. Broader science denial and the world’s reliance on fossil fuels are much bigger barriers. But including Fahrenheit figures is a small change — a matter of plugging some numbers into a calculator — that could help drive more action.
Today’s newsletter will look at the new climate report and how close, or not, the world is to avoiding the worst consequences.
Expect more catastrophes
The new analysis, a synthesis of six previous reports by the United Nations’ climate group, presents a mixed picture of the world’s fight against climate change. Here are three takeaways:
1) The world is on track to surpass a significant level of warming. The world is likely to hit what scientists consider relatively safe levels of warming — 1.5 degrees Celsius (2.7 degrees Fahrenheit) above preindustrial temperatures — by the early 2030s, the report warned. Countries could still take steps to prevent that, by slashing greenhouse gas emissions in half by 2030 and no longer adding carbon dioxide to the atmosphere by the 2050s. But the required measures are so extreme that they seem increasingly unlikely, many experts say.
2) On the current track, brace for more disasters. Continued warming will mean more catastrophic flooding, deadly heat waves, crop-destroying droughts and other extreme weather. Some of those effects are already visible. Last year, record-breaking heat waves hit much of the world, including the U.S. and Europe, and floods submerged a third of Pakistan.
3) The world has made some real progress. In the past, climate reports warned that warming could surpass four degrees Celsius (7.2 degrees Fahrenheit) by 2100. Today, the Earth is on a trajectory of around two to three degrees Celsius (3.6 to 5.4 degrees Fahrenheit), thanks to the uptake of cleaner energy and to projections that coal use will decline. That difference of a few degrees can, like a fever, prevent more catastrophic events. And as my colleague Somini Sengupta noted, pivoting away from fossil fuels is the fastest way to stop global warming.
The bottom line
Despite some progress, the world is still on track to face devastating outcomes from climate change. To prevent the worst, scientists are calling for a massive effort that will require the world’s most powerful and richest countries to work together.
Getting so much of the world onboard requires communicating the problem in a way everyone can understand. Excluding the temperature measure used by the U.S. and some other nations hinders that mission. Offering different versions of reports with Celsius and Fahrenheit could help address that issue, or scientists and news outlets could translate Celsius-focused reports to Fahrenheit in their own work.
More on climate change
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The world will have to spend more on climate measures because it waited so long to act, the report found. The U.S. said it would reassess its spending.
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New technologies promise to take carbon out of the air, but some critics say they’re overblown. See how they work.
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Expensive pipeline projects are again starting fights, but these pipelines are different: They’re intended to help store carbon underground.
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A very wet winter has eased California’s drought. These maps and charts show the difference.
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Electric cars are becoming more affordable. One reason: cheaper lithium for batteries.
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President Biden issued his first veto to preserve investment managers’ ability to take account of climate change.
THE LATEST NEWS
China-Russia Summit
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Vladimir Putin welcomed Xi Jinping to Russia. The leaders flattered each other, affirmed their alliance and barely spoke about the war in Ukraine. Follow our updates.
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The U.S. said the visit showed China was unwilling to hold Russia accountable for war crimes.
Trump Investigation
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House Republicans rallied to support Donald Trump ahead of a potential indictment, showing he still has a grip on the party.
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Ron DeSantis, Trump’s likely rival in 2024, also criticized the investigation.
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An indictment probably won’t change how Trump’s supporters feel about him, Nate Cohn writes in an assessment of the potential fallout.
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Alvin Bragg is poised to become the first prosecutor to bring criminal charges against a former president.
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The Manhattan grand jury heard testimony from a critic of Michael Cohen, a key witness against Trump.
International
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France’s retirement age will rise to 64, after Emmanuel Macron’s government narrowly survived a no-confidence motion.
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The Greek national intelligence service wiretapped an employee of Meta, which owns Facebook and Instagram. She also found spyware on her phone.
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A report found London’s police to be institutionally racist and sexist, and said the city “no longer has a functioning neighborhood policing service.”
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The Chinese spy balloon had remote-control steering for parts of its journey. The Times tracked its path.
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Two New Yorkers are behind the judicial overhaul now dividing Israel.
Other Big Stories
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Fox News panicked over ratings after Biden won the presidency and then proceeded to promote false stories about the election, court documents argue.
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Los Angeles school employees are set to begin a three-day strike today, shutting the nation’s second-largest school district.
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Shares of First Republic, an imperiled bank, fell another 47 percent yesterday.
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Amazon plans to lay off 9,000 more workers.
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A Florida jury convicted three men of murdering the rapper XXXTentacion during a robbery in 2018.
Opinions
George W. Bush’s global program to fight AIDS was the single best policy of any president in recent decades. He deserves more credit, Nicholas Kristof says in a video.
The Supreme Court let college athletes earn money for endorsements and appearances. The N.C.A.A. is still fighting back, Bomani Jones argues.
For those who live through them, wars never really end, says Lulu Garcia-Navarro.
MORNING READS
Reba to the rescue: Reba McEntire is trying to save her childhood hometown in Oklahoma.
We ❤️ NYC: New York has a new logo. New Yorkers hate it.
Bohemian: A Parisian designer built his dream house in a former brothel.
Advice from Wirecutter: Maximize space in a tiny bedroom.
Lives Lived: Stuart Hodes danced with Martha Graham in the 1940s and kept dancing into his 90s. He died at 98.
SPORTS NEWS FROM THE ATHLETIC
Another No. 1 goes down: Miami shocked No. 1 seed Indiana last night in the women’s N.C.A.A. tournament, the second time in two days a top seed has fallen.
Hall of Fame coach: Rick Pitino is leaving Iona to become the men’s basketball coach at St. John’s.
Last-minute changes? Major League Baseball is considering a proposal from players to tweak its new rules, which debuted at the start of spring training.
ARTS AND IDEAS
Opera’s next generation
Last summer, American directors headlined several of Europe’s most prestigious opera festivals. That would have been unheard-of even a decade ago, but opera companies are warming to a new generation of Americans with fresh takes.
Many German directors take an intellectual approach to opera, said Louisa Proske of the Halle Opera. “What can be attractive,” she said, “is this kind of propensity to storytelling that I think is more in the Anglo-Saxon tradition.”
In The Times, A.J. Goldmann profiled three American opera directors making a mark in Europe.
PLAY, WATCH, EAT
What to Cook
A sour cream and onion marinade delivers flavor and keeps these fried chicken cutlets juicy.
On Broadway
“Bob Fosse’s Dancin’” is, by the show’s own admission, almost plotless. But the dancing is excellent.
What to Listen To
Depeche Mode is embracing the darkness with the group’s 15th album.
Late Night
Jimmy Kimmel called this potential indictment week for Trump “the calm before the Stormy.”
Now Time to Play
The pangram from yesterday’s Spelling Bee was wheezing. Here is today’s puzzle.
Here’s today’s Mini Crossword, and a clue: #1 choices, informally (five letters).
And here’s today’s Wordle.
Thanks for spending part of your morning with The Times. See you tomorrow. — German
P.S. The Times’s next class of newsroom fellows includes a digital cartographer, a physics Ph.D. student and a self-proclaimed Texan New Yorker.
Here’s today’s front page.
“The Daily” is about Xi Jinping traveling to Moscow.
Matthew Cullen, Lauren Hard, Lauren Jackson, Claire Moses, Ian Prasad Philbrick, Tom Wright-Piersanti and Ashley Wu contributed to The Morning. You can reach the team at themorning@nytimes.com.
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