News
- Neuroscience
An on-off switch for eating
By triggering or silencing certain brain cells, scientists can get mice to feed or stop feeding regardless of hunger.
- Life
Newfound biological clocks set by the moon
Two unrelated marine organisms have rhythms dictated by tides, lunar cycle.
- Plants
Hard-shelled seaweed survives by its loose knees
Stringy joints between calcified algae’s segments don’t break easily under repeated stresses.
- Earth
Oxygen wafted into Earth’s atmosphere earlier than thought
Date pushed back to 3 billion years ago, suggesting photosynthesis had evolved by then.
- Psychology
Mental rotation gears up by age 5 for both boys and girls
Kid-friendly test suggests that the ability to visualize objects from different angles starts early.
- Health & Medicine
Dextrose rub helps newborns with low blood sugar
Massaging the sugary gel into babies’ mouths may lessen the need for intravenous infusions of glucose, a study shows.
- Life
Killer cells trained on leukemia may protect some people
Immune system seems to remember cancer in people who've never had it, a new study suggests.
- Neuroscience
Scented naps can dissipate fears
People unlearned an odor's unpleasant accompaniment when they smelled it in their sleep.
- Health & Medicine
Home births more risky than hospital deliveries
Babies born at home are more likely to lack pulse after five minutes.
- Ecosystems
Feces in termites’ nests block biological pest control
Built-in poop nourishes bacteria that protect notorious Formosan species.
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- Planetary Science
Mars rover fails to find methane
A dearth of the gas in the Red Planet's atmosphere disappoints scientists looking for signs of biological activity.
