News
- Health & Medicine
Timing That First Spoonful: Diabetes risk reflects when cereals enter infant diet
The timing of cereals' introduction into children's diets may affect their risk of developing type 1 diabetes, two studies suggest.
- Anthropology
Y Trail of the First Americans: DNA data point to late New World entry
Scientists identified a gene variant on the Y chromosome that allowed them to estimate that people first reached the Americas no earlier than about 18,000 years ago.
- Earth
Volcanic Legacy: Tortoises chronicle eruption in their genes
An ancient volcanic eruption in the Galápagos Islands left its legacy in the diminished genetic diversity of one subspecies of the archipelago's famed giant tortoises.
- Animals
Carnivores in Captivity: Size of range in wild may predict risk in zoo
A survey of zoo reports of troubled animals suggests that the minimum size of a species' range predicts how well it will adapt to captivity.
- Health & Medicine
One bug’s bane may be another’s break
People who carry pneumococcus bacteria in their nasal passages may be partially protected against having their noses colonized by Staphylococcus aureus.
- Health & Medicine
Drug combination unexpectedly flops
A combination of therapies that researchers anticipated would work well against HIV failed to stop the virus from replicating in more than half the volunteers who received it.
- Health & Medicine
Resistant staph spreads in communities
Antibiotic-resistant Staphylococcus aureus—once a problem limited mainly to health care settings—has become a menace in communities around the world.
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Toronto travelers wash their hands of disease
Air travelers in Toronto, which experienced an outbreak of severe acute respiratory syndrome (SARS) outbreak earlier this year, are more likely to wash their hands after using public restrooms than are travelers in other major North American airports.
- Health & Medicine
Amid bleak outlook, antibiotic shines
Encouraging research on a novel antibiotic offers a rare shot of optimism at a time when existing microbe-killing compounds are losing effectiveness and efforts to develop replacements are flagging.
- Health & Medicine
Scientists retract ecstasy drug finding
Scientists have recanted a controversial report on the dangers of the drug commonly called ecstasy.
- Health & Medicine
Broken arms way up
Broken arms among adolescents have risen sharply from 30 years ago, possibly because of the popularity of high-risk sports such as skateboarding and a combination of less milk intake and more soft drink consumption.
- Archaeology
Ancient tunnel keeps biblical date
Radiocarbon dating of material from an ancient tunnel in Jerusalem indicates that the passage was built around 700 B.C., supporting a biblical account of the tunnel's construction.
