Climate and Environment

Balloon launches from around the world are part of a new kind of global alarm system: One that can detect if another country tries to dim the sun.

By Christopher Flavelle

As international talks continue this week, a dozen U.N. officials reveal scientists tracked their exposure to many chemicals found in plastics.

By Hiroko Tabuchi

The heaviest November snowstorm on record in the South Korean capital was a nuisance to commuters, and a delight to tourists, children and dogs.

By John Yoon

Martha Schwartz Partners works around the globe to take on pollution and warming of the planet.

By Shivani Vora

For Claudia Adriazola-Steil, the issue of safety, and the goal of lowering emissions and improving access, is deeply personal.

By Tanya Mohn

Eriel Tchekwie Deranger works to empower Indigenous peoples to lead the way on climate justice and decolonize environmental policy.

By Keridwen Cornelius

Having grown up in Chad, Hindou Oumarou Ibrahim has taken on the cause of negotiating for her community at the international level.

By Shivani Vora

Helena Norberg-Hodge founded Local Futures with a mission of strengthening local economies and ending the most wasteful aspects of the global trade system.

By Keridwen Cornelius

With “Doughnut Economics,” Kate Raworth looks instead at planetary well-being.

By Keridwen Cornelius

Through her restaurant in France and her academy, Nadia Sammut aims to teach people about how their food choices can harm — or help — the planet.

By Farah Nayeri

Sunaina Sinha Haldea heads the board of SFC Energy AG, whose fuel cells are helping to provide continuous and safer power to remote areas.

By Shivani Vora

Cows and pigs produce a large share of planet-warming methane. A new tax is part of a plan to clean that up.

By Somini Sengupta and Charlotte de la Fuente

Mette Lykke leads Too Good to Go, which operates in 19 countries to reduce waste and make surplus food accessible.

By Shivani Vora

We explore Donald Trump’s climate agenda.

By Lisa Friedman

Fewer people will be able to afford electric cars and trucks if President-elect Donald J. Trump and Republicans in Congress eliminate a $7,500 federal tax credit.

By Lawrence Ulrich

This Southeast Asian island, home to some of the world’s strangest and most iconic creatures, is a dream destination for a growing number of “mammal watchers.”

By Mihir Zaveri

Extreme turbulence, a blown-out door, an engine on fire: For passengers and crew members who have experienced in-air emergencies, the pain endures.

By Carly Lewis

Delegates from developing countries described the deal’s financial target, $300 billion per year by 2035, as lacking the ambition needed to help their governments combat climate change.

By Axel Boada

Many nations hope to reduce the half a billion tons of plastic made each year. But pushback from plastic and oil producers, and Donald Trump’s election, could scuttle an agreement.

By Hiroko Tabuchi

The financing plan, which calls for $300 billion per year in support for developing nations, was immediately assailed as inadequate by a string of delegates.

By Max Bearak

A president has little control over global oil markets, economists say.

By Lisa Friedman

Hundreds of brush fires and wildfires have sparked all over the New York City region. Hilary Howard, who covers climate change and the environment in the region, explains what’s happening.

By Hilary Howard, Farah Otero-Amad, Karen Hanley, David Jouppi and James Surdam

Nitrogen oxides, a group of gases from the burning of fossil fuels, is linked to a range of health effects.

By Austyn Gaffney

Every month so far has seen floods, fires, smashed heat records or some combination of extreme weather. Little time remains for leaders to agree on what to do about it.

By Somini Sengupta

Crowds in Anchorage have braved freezing temperatures and slippery ice to see the hulking carcass of a rare fin whale, which washed ashore a few miles from downtown.

By John Yoon

The hoppy pilsner from Singapore, where freshwater is scarce, is part of an effort to promote recycling solutions.

By Rebecca F. Elliott

Despite endorsing a transition away from fossil fuels last year, Saudi Arabia has since worked to undermine it, diplomats say. Lisa Friedman, a New York Times reporter covering climate policy and politics, describes how the opposition is unlike anything climate negotiators say they’ve seen before.

By Lisa Friedman, Claire Hogan, Laura Salaberry and Ray Whitehouse

Deadly landslides are becoming more common and large amounts of rain are a known trigger. An atmospheric river is dumping rain out West. What you should know about your risk.

By Austyn Gaffney

The company’s woes are symptomatic of a wider malaise among companies that make batteries for electric vehicles.

By Jack Ewing and Melissa Eddy

Donald J. Trump promised to erase Biden tailpipe rules that are designed to get carmakers to produce E.V.s. But Detroit wants to keep them.

By Coral Davenport and Jack Ewing

In Azerbaijan, site of the COP29 climate talks and a petrostate, people aren’t only proud of their oil. They swear by its health benefits and visit resorts to soak in it.

By Anton Troianovski

Western countries are confronting demands for trillions of dollars to fight climate change and to cope with its worsening effects.

By Max Bearak

About two inches were forecast to fall through Saturday. Officials say it won’t be enough to fully replenish the city’s reservoirs.

By Yan Zhuang

The creator of the popular guidebook series, who recently died, not only democratized travel, but supported sustainable travel, before it got that name.

By Elaine Glusac

A new proposal would restrict the import of hunting trophies, pelts, bone carvings and other items.

By Catrin Einhorn

Public health advocates worry that Donald Trump could unravel federal clean water efforts, including restrictions on lead pipes and chemicals known as PFAS.

By Hiroko Tabuchi

A second Trump administration could alter the lives of all sorts of animals, whether they live in laboratories, zoos, fields or forests.

By Emily Anthes and Catrin Einhorn

Now that New York City and surrounding counties are under a drought warning, officials are asking residents to save water and help prevent more wildfires.

By Alyce McFadden

The New York region is unlikely to ever have as many brush fires as out West. But residents need to be ready for more droughts.

By Hilary Howard

As he made his final appearance at global gatherings, including at the Group of 20 summit in Brazil, President Biden lobbied for his foreign policy goals even as leaders shifted attention away from him.

By Zolan Kanno-Youngs