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The floating ice shelf of world’s widest glacier – Thwaites glacier in Antarctica – is detaching, with worrying implications for global sea-level rise

What you should know about hantavirus, why PCOS is getting a new name, and how some fish hide in an unusual spot

Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the place beyond which physics breaks and anything is possible

Inside some very special black holes, there may be a boundary called a Cauchy horizon. Columnist Leah Crane explores the place beyond which physics breaks and anything is possible

These people are not in danger.

Hawking faced a question with no answer hiding behind it. The best boundary condition for the universe, he decided, was that there was no boundary at all. To make that statement into physics, he had to do something deeply strange to time.

Genetic analysis suggests interbreeding between two groups of human relatives

The long-tailed pygmy rice rat is the primary host for Andes virus, the type of hantavirus responsible for sickening passengers on the MV Hondius cruise ship

A newfound nocturnal navigation system challenges what entomologists thought they knew about how ants find their way

The equations of general relativity give up at the singularity. Decades before Stephen Hawking dared to guess what came before, John Wheeler and Bryce DeWitt built the strange mathematical machinery that would make the question askable in the first place.

Orion never had a sword like this.

NASA is starting to paint in some of the details of its planned 2027 Artemis III mission, but key questions, such as who its astronauts will be, are yet to be answered

The “coastline paradox” helped to define fractals, but coastlines themselves turn out to be less fractal than thought

In Ladakh, Himalayan wolves are increasingly breeding with feral dogs, giving rise to a new animal known as khipshang that could injure humans and outcompete other carnivores

Researchers know very little about how long the Andes version of the hantavirus can remain in human hosts

A strange, tiny fish that resembles the famous Sesame Street character camouflages amid red algae thanks to its flamboyant reddish “hairs”

Varda’s plan to develop medicines in microgravity has its advantages, but it requires a big up-front cost

Hantavirus misinformation is spreading fast. COVID trauma and social media algorithms may be to blame

The filmmaker behind the newly released movie Silent Friend shares the scientific and historical inspiration for its story of botanical consciousness

As more people turn to chatbots for medical guidance, the technology is revealing both its promise and its risks