News
- Paleontology
Listening to fish for extinction clues
Tiny fossils from fish that survived worldwide extinctions about 34 million years ago may reveal that cooler winters caused the die-off.
- Health & Medicine
Fetal cells pop up in mom’s thyroid
A woman's thyroid gland contains male cells, suggesting that cells from her son passed into her when he was a fetus.
- Health & Medicine
Gene helps alcohol help the heart
A genetic study indicates that moderate consumption of alcohol helps keep the heart healthy.
- Health & Medicine
Pill boosts cancer risk in some women
Women who took oral contraceptives before 1975, and whose mother or sister had breast cancer between 1944 and 1952, have triple the likelihood of getting breast cancer as compared with similar women who didn't take the pill.
- Health & Medicine
Interferon delays multiple sclerosis
In some people who show early-warning signs of multiple sclerosis, the drug interferon-beta-1a seems to delay or even prevent the disease from becoming full-blown.
- Archaeology
Agriculture’s roots go tropical
Tropical-forest dwellers in Central America may have cultivated manioc and other root crops as many as 7,000 years ago.
- Archaeology
Early farmers crop up in Jordan
An ancient site discovered in southern Jordan dating back more than 9,000 years may help to illuminate the origins of farming in the Middle East.
-
Certain mental ills may be tied to violence
A long-term study in New Zealand links elevated violence rates in young adults to the presence of at least one of three psychiatric ailments—alcohol dependence, marijuana dependence, and a range of psychotic experiences and beliefs called schizophrenia-spectrum disorder.
- Tech
Aircraft trick may give big rigs a gentle lift
Using sheet-like jets of air to control aerodynamic drag and lift—a technology first developed for aircraft—may boost gas mileage and improve braking and handling of tractor-trailer trucks.
- Materials Science
Crystal puts pressure on diamonds
A new type of synthetic crystal called moissanite allows researchers to study more material at high pressure than is possible with traditional diamond devices.
-
Nicotine metabolism may spawn carcinogen
The body may metabolize nicotine into products that the lungs subsequently may convert into a potent compound that causes lung cancer.
- Animals
Dull birds and bright ones beat so-so guys
The plumage of yearling male lazuli buntings shows signs of a rare form of evolutionary pressure called disruptive selection.
