Science Times: How high is that mountain actually?
Plus: Feral dogs, a lonely caterpillar and a trip to Antarctica —
Science Times
December 30, 2025
A pack of dogs, including one in the immediate foreground, standing around on a dirt street of a hilly town.

Kyle Obermann

Feral Dogs on the Roof of the World

As many as 25,000 free-ranging dogs roam the cold, high-altitude desert of Ladakh, India. That’s a problem for wildlife and people alike.

By Kyle Obermann and Emily Anthes

A view from the ground looking up at the enormous Space Launch System rocket in the even larger Vehicle Assembly Building at the Kennedy Space Center.

Joel Kowsky/NASA

Your Wait for These Space Events Is About to Pay Off

In 2026, there will be journeys to the moon and Mars, new visions of the cosmos and a solar eclipse that might be worth traveling for.

By Katrina Miller and Michael Roston

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Sandra Dionisi

This Common Infection Was Thought to Affect Only Women. Now Doctors Know Better.

Gynecologists long viewed bacterial vaginosis as solely a women’s issue — until a study that treated their male partners, too, proved otherwise.

By Rachel E. Gross

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Brian Cox, wearing a dark jacket, sits on a blue chair with crossed legs. His reflection is visible in a mirror.

Andrew Testa for The New York Times

the global profile

Before This Physicist Studied the Stars, He Was One

Brian Cox once toured as a keyboardist in major rock and pop bands. Now he’s a particle physicist on a new world tour with a dazzling show he designed in an era of science disinformation and denial.

By Stefano Montali

A woolly caterpillar, mostly black with a few orange marks, in a glass container with some leaves.

Diana Cervantes for The New York Times

They’re Trying to Find a Mate for This Very Lonely Caterpillar

The Sacramento Mountains checkerspot butterfly is critically endangered, with the last known larva living in a lab in New Mexico.

By Catrin Einhorn and Diana Cervantes

A woman in eyeglasses and a black head scarf stands out of focus behind a "fairy lantern" flower.

Mohd Faizal

Trilobites

Who’s the Parasite Now? This Newly Discovered ‘Fairy Lantern’ Flower.

Found in a forest outside Kuala Lumpur, Malaysia, the plant steals nutrients from subterranean fungi.

By Douglas Main

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The New York Times

Hard Fork

Where Is All the A.I.-Driven Scientific Progress?

A tech C.E.O. explains why A.I. probably won’t cure diseases anytime soon. Hint: You still need humans.

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39 MIN LISTEN

LOST SCIENCE

Times journalists are speaking with scientists whose research has ended as a result of policy changes by the Trump administration.

A portrait of Dr. Marina Vance, who wears a red blouse and poses in a burn scar on a hill in Colorado.

Daniel Brenner for The New York Times

Lost Science

She Studied the Health Effects of Wildfires

Marina Vance had an E.P.A. grant to help homeowners counter the impact of wildfire smoke, until the agency deemed the research “no longer consistent” with its priorities.

By Interview by Carl Zimmer

Ana Vaz, in a blue and white blouse decorated with fish and sea shells, stands near a coastline in Rio de Janeiro.

Dado Galdieri for The New York Times

Lost Science

She Tracked the Health of Fish That Coastal Communities Depend On

Ana Vaz monitored crucial fish stocks in the Southeast and the Gulf of Mexico until she lost her job at NOAA.

By Austyn Gaffney

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Cheriss May for The New York Times

Lost Science

She Studied Mosquitoes to Prevent Malaria

Jenny Carlson Donnelly traveled to malaria-affected countries to test mosquitoes and save lives. Then she lost her job at U.S.A.I.D.

By Alexa Robles-Gil

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Moriah Ratner for The New York Times

Lost Science

His Group Made World-Class Measurements of Atomic Elements

Yuri Ralchenko led one of the oldest teams at the National Institute of Standards and Technology. The fate of some experiments hangs in the air.

By Katrina Miller

CLIMATE CHANGE

A craggy expanse of bluish ice sits in steel blue water.

Ian Strachan/EYOS Expeditions, via Agence France-Presse — Getty Images

Bound for Antarctica: A Voyage to Earth’s End Is Underway

The continent’s ice is melting and raising sea levels worldwide. Our journalists will be sending regular dispatches as they head there with scientists trying to gauge the dangers.

By Raymond Zhong and Mira Rojanasakul

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HEALTH

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Chloë Ellingson for The New York Times

Claire Brosseau Wants to Die. Will Canada Let Her?

Ms. Brosseau says mental illness has made her life unbearable. She wants a medically assisted death. Even her psychiatrists are split over whether she should have one.

By Stephanie Nolen and Chloë Ellingson

A father holds his son on a hospital table while three nurses help prepare the son for an injection.

Arlette Bashizi for The New York Times

Global Health

How Cameroon Fought to Save Its Malaria Program After the U.S. Cut Critical Funding

When the Trump administration slashed foreign aid, it gutted a program that had reduced malaria deaths world wide. In northern Cameroon, health workers tried to protect children in one last rainy season.

By Stephanie Nolen and Arlette Bashizi

A microscope image of a sliced ovarian follicle with a blue-purple stain.

Innerspace Imaging/Science Source

It’s Time to Give the Ovary Some More Respect

Recent research highlights that for fertility and aging, the egg may be the leading lady, but she needs her supporting cast.

By Kristen V. Brown

A grid of four images. A closeup of a hand tying the laces of a black sneaker, a hand wrapped around a leg during a stretch, a hand gripping a bar while lifting weights, and a woman in workout gear walking up a forest hill.

10 Fitness Tips to Help You Get Moving in 2026

Turn your walk into a better workout, build strength without weights and more exercise advice for the year ahead.

By Erik Vance

Exterior of an office building with a sign saying “National Kidney Registry” and a blue sky in the background.

How One Father Created an Organ Empire

The National Kidney Registry has matched thousands of kidney donors with recipients. It has also paid millions of dollars to a company owned by its founder.

By Danielle Ivory, Grace Ashford and Robert Gebeloff