An Asteroid’s Destruction May Have Given Mars Rings, Then Moons

Scientists simulated a situation that may offer an improved explanation for how the Red Planet ended up with small Phobos and tiny Deimos.

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At COP29, Tourism Gets Its Day. How Has It Fared With Climate Goals?

The tourism industry will be officially recognized at COP29 on Wednesday. Industry leaders signed a climate accord in 2021 to make travel more sustainable, but the results so far are meager.

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The Perfect Novel for the Baku Climate Summit: Lydia Kiesling’s Mobility

The U.N. climate conference, held in a petrostate, is a surreal moment. This darkly funny novel about Baku, oil companies and climate change in the first Trump term helps make sense of it all.

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Inching Toward a Fusion Energy Future

A handful of start-ups are racing to usher in an era of near-limitless fusion energy, but big questions remain.

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Biden Fades Out of the Picture in Talks With World Leaders

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.

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Is the Northeast Entering Its Wildfire Era?

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.

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NYC Drought: How to Conserve Water and Prevent Wildfires

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.

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What Trump’s Return Could Mean for Animals

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

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Giraffes Need Endangered Species Act Protection, U.S. Officials Say

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

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A Travel Writer Remembers Arthur Frommer

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

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