All Stories
- Paleontology
These mammal ancestors birthed live young far earlier than thought
Growth rings on a fossil bone suggest at least one mammal ancestor gave birth to live young rather than laying eggs 236 million years ago.
- Health & Medicine
Estrogen therapy is linked to fewer signs of Alzheimer’s in the brain
Estrogen-only menopause therapy in older women was linked to less Alzheimer’s brain pathology at autopsy but may not prevent the disease.
- Space
A vest tested on the Artemis I mission blocked some radiation exposure
A 26-kilogram plastic garment, flown on a model human torso on the uncrewed Artemis I mission, may one day protect astronauts from solar storms.
- Animals
Too many choices complicate female frogs’ sex lives
In the lab, female frogs were less likely to choose preferred males as mating calls increased, potentially giving other males a better shot.
- Health & Medicine
Newborn screening for cancer risk could save lives. Should it be done?
Genetic screening that identifies cancer-linked mutations in newborns could give doctors a head start on treatment, but it comes with risks.
- Science & Society
Bamboo toilet paper intrigued me. Reality turned out to be messy
What makes a greener wipe? Researchers have more to say about bamboo's ecological risks, given limited carbon footprint data.
- Space
The largest known galaxy is wider than 17 Milky Ways
Scientists have identified the edge of galaxy IC 1101 and crowned it with the title of largest known galaxy.
- Animals
Sad or afraid? Dogs may be able to read your face
A new brain-imaging study suggests that dogs may be able to distinguish between certain negative human emotions just by looking at people’s faces.
- Science & Society
Science backs calls for limiting screens in schools
School device use links with lower test scores and distractions abound. But reversing the entrenched pandemic pivot to screens will be hard.
- Archaeology
Ancient Greek rings may have been forged with iron from meteorites
Chemical analysis of Bronze Age iron objects indicate that Greek nobles may have indulged in signet rings made with precious metal from the sky.
- Artificial Intelligence
AI may respond differently to bosses and subordinates
In simulated conversations, social hierarchy can sway AI agents, making lower-status systems more likely to follow harmful requests.
- Health & Medicine
Here’s what the first mRNA flu vaccine could mean for flu season
Compared with standard flu shots, Moderna’s mFlusiva generates stronger, longer-lasting immunity and is more effective at preventing infection, data show.
