News
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Health & Medicine
Color array reveals breast cancer types
A suite of genes lights up when researchers probe for cancer.
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Health & Medicine
Sometimes an antibiotic is much more
By reining in destructive enzymes in the body, tetracyclines can thwart various diseases, including periodontal bone loss and cancer.
By Janet Raloff -
Paleontology
Extinctions Tied to Impact from Space
Evidence trapped in 250-million-year-old sediments may help researchers pin the ultimate blame for the massive extinctions that occurred then on the impact of an extraterrestrial object about 9 kilometers across.
By Sid Perkins -
Health & Medicine
Calcium supplements for chocolate
Using soap chemistry, scientists prevented some of chocolate's saturated fat--and calories--from being absorbed.
By Janet Raloff -
Health & Medicine
Can childhood diets lead to diabetes?
Prolonged consumption of foods that break down quickly into simple sugars appears to foster obesity and vulnerability to diabetes, an animal study shows.
By Janet Raloff -
Chemistry
Research shows why water acts weird
A new technique shows a link between water's unusual physical properties and its abnormal molecular structure.
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Chemistry
New all-metal molecules ape organics
Researchers have stumbled upon the first all-metal, aromatic molecules.
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Organ donations take family toll
Taiwanese people who donate organs from a deceased family member still support that decision 6 months later, despite frequently experiencing negative consequences related to their culture and religion.
By Bruce Bower -
Hormone therapy may prove memorable
Healthy, older women may be protected against losses of verbal memory that typically occur with age if they receive hormone-replacement therapy.
By Bruce Bower -
Planetary Science
Happy landing: Craft descends onto Eros
On Feb. 12, NEAR Shoemaker became the first spacecraft to land on an asteroid, the space rock 433 Eros.
By Ron Cowen -
Archaeology
Maize domestication grows older in Mexico
Maize cultivation existed in southern Mexico at least 6,300 years ago, according to a recent radiocarbon analysis of two maize cobs unearthed in a cave nearly 40 years ago.
By Bruce Bower -
Health & Medicine
Common additive thwarts malaria parasite
Triclosan--a drug used as an antimicrobial agent in toothpaste, deodorant, and other products--kills rodent malaria parasites in mice and human malaria parasites in test-tube studies.
By Nathan Seppa