Features

A teen went to the emergency room with classic signs of diabetes, but odd aspects of her case pointed to a second, rarer diagnosis.

Book A future AI would have no need to rid the world of humanity because we're incredibly useful. But if it did want to shrug us off, this is how it would likely play out.

Earth from space A recent satellite photo captured a gleaming halo of phytoplankton encircling the remote Chatham Islands. The stunning sight is the result of a hidden underwater structure, which has also helped kill hundreds of cetaceans.

Astonishing Artifacts This unique carved altar represents the triumph of light over darkness in ancient Roman religion.

The largest 3D map of the universe, created with data from the Dark Energy Spectroscopic Instrument, shows 47 million galaxies in stunning detail.

There's lore about chickens surviving from seconds to months after their heads are chopped off, but what does the science say?

The stories about King Arthur are almost certainly false or greatly exaggerated, but did the man himself exist?

Dr. Paul Broca conducted an autopsy on a patient known as "Tan," who had aphasia, or the inability to speak. Broca's work identified a region of the brain that is key to spoken language.

Bears in Svalbard, Norway, are fatter than expected, and others in Greenland are showing signs of genetically adapting to climate change — but the signs elsewhere are not good.

In a strange medical case, a woman suddenly started hearing voices, and they directed her to seek care for a brain tumor.