News
- Neuroscience
Sunbathing may boost endorphins in the body and brain
UV light makes mice churn out a molecule that is a cousin of morphine and heroin, a finding that may explain why some people seek out sunshine.
- Environment
Triclosan may spoil wastewater treatment
Common antimicrobial could make microbes more drug resistant and less efficient at breaking down sewage sludge in municipal treatment plants.
- Physics
Supercooled liquid water hits record low
Weird supercooled water well below its freezing point viewed with ultrafast laser.
- Psychology
Children negotiate taking turns surprisingly early in life
Five-year-olds can coordinate decisions with others in a fair way, even when each child has conflicting interests.
- Neuroscience
Brain signal reappears after ADHD symptoms fade
In adults who no longer have ADHD, brain synchrony appears.
- Animals
Swimming evolved several times in treetop ants
Certain ants living in tropical forest canopies turn out to be fine swimmers.
- Earth
Earth’s deep interior holds vast reservoir of water
Ocean’s worth of water trapped in Earth’s mantle, lab experiments and seismic data suggest.
- Life
Dinos straddled line between cold- and warm-blooded
Tyrannosaurus rex and other dinosaurs straddled line between cold- and warm-blood, a new analysis finds.
- Genetics
Chimp and human lineages may have split twice as long ago as thought
New estimates of chimpanzee mutation rates suggest humans and chimps last shared a common ancestor 13 million years ago.
- Health & Medicine
Number of skin moles tied to breast cancer risk
Women who have many moles also have increased disease risk, which may reflect higher estrogen levels.
- Animals
Winter road salting reshapes next summer’s butterflies
Winter road salt treatments boost sodium in roadside plants and alter development for monarch butterflies.
- Life
Oxytocin stimulates repair of old mice’s muscles
The naturally produced hormone oxytocin, well known for its role in social bonding, may help heal injured muscles in the elderly.
