Squat rhinos lived in North America about 12 million years ago, congregating in huge, water-bound herds much like modern hippos.  [...]

More than just a cool bit of trivia, the finding raises questions about our understanding of Earth’s history.

Dubbed the “bone collector,” this caterpillar found on a Hawaiian island disguises itself while stalking spider webs for trapped insects to eat.  [...]

Hubble is still going strong 35 years after it was launched into space. Celebrate its anniversary with some out-of-this-world images.  [...]

Warming temperatures can ramp up the activity of methane-producing bacteria in wetland soils, adding to methane emissions.

The first skeletal evidence of a gladiator show or execution involving an exotic animal comes from a Roman British man with bite marks from a lion.  [...]

Societal upheaval can trigger uncertainty, which makes people susceptible to cognitive traps. Experts suggest some simple tools can help.  [...]

Scientists mapped a neural circuit that associates an unfamiliar flavor with food poisoning symptoms in mice.

Puppies with a good grasp of basic gestures, self-confidence and impulse control grow into well-behaved adults, a new study suggests.  [...]

Across much of the world, loneliness increases from middle age to later years. That trend is reversed in the United States, a new study shows.  [...]

Rising global temperatures are driving the sharp decline in terrestrial water storage. This trend isn’t likely to change, scientists say.  [...]

Autism rates are higher than ever before, probably because of more expansive and sensitive diagnoses. Those numbers highlight the need for more support for people with autism.  [...]

An overlooked Antarctic water system could raise sea levels by more than 2 meters by 2300, computer simulations show.

Editor in chief Nancy Shute discusses the booming online market for semaglutide, new findings on how early humans used sophisticated thinking and whether Spinosaurus could swim.  [...]

All about AI Scientists are working on AI technology that has brain-inspired hardware, architecture or algorithms. Such neuromorphic AI could be nimbler, more efficient and more [...]

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.  [...]

Satellite data reveal a link between the amount of black carbon in the atmosphere and rates of Antarctic sea ice loss in recent years.  [...]

An archaeological site in Germany suggests communal hunting and complex thinking emerged earlier in human evolution than once thought.  [...]

Solve our latest interactive crossword. We'll publish science-themed crosswords and math puzzles on alternating months.

Astronomers have a lot of thoughts about the latest paper claiming we’ve found the strongest hints of alien life yet on the distant planet K2 18b.  [...]