Exquisitely preserved feathers, the first ever found in fossilized dinosaur poop, are providing a peek into how some ancient birds lived — and possibly went extinct. Dense bristles suggest some of the ...

A record player-like microscope and computer simulations solve a longtime mystery, showing that metal ions bridge DNA strands ...

Daily sea surface temperatures in the region where El Niño develops are more extreme than at any point in recorded history.

Genetic testing of two tiny tiger cats from Bolivia revealed a new species, adding a new branch to the feline family tree.

A thickening cortex, as shown in MRIs, preceded amyloid-beta accumulation, a known hallmark of Alzheimer’s disease, by up to seven years.

Scientists engineered roses that made both a blue pigment and a colorless helper molecule that brought out its shade.

The gas giant Beta Pictoris b, about 63 light-years away, has the mass of 10 Jupiters and a magnetic field thousands of times as strong as Earth’s.

The newest “Dragon Hatchling” AI model is testing whether skipping words in intermediate reasoning could cut computational cost.

Incendiamoeba cascadensis can replicate at 145° F, breaking the heat tolerance record for eukaryotes, a domain of life that ...