News
- Anthropology
Evolution’s Buggy Ride: Lice leap boldly into human-origins fray
A controversial genetic analysis of lice raises the possibility that some type of physical contact occurred between ancient humans and Homo erectus, probably in eastern Asia between 50,000 and 25,000 years ago.
- Humans
Nobel prizes: The sweet smell of success
Nobel prizes in the sciences went to research on olfactory genes, subatomic particles, and the molecular kiss of death.
- Animals
Separate Vacations: Birds winter apart but return in sync
Mated pairs of black-tailed godwits may fly off to winter refuges a thousand kilometers apart but can still arrive back at their breeding site the next spring within a few days of each other.
- Tech
Dawn of the commercial space age
On Oct. 4, a privately funded, piloted craft called SpaceShipOne reached a height of 378,000 feet (115.1 kilometers), breaking a world altitude record for rocket-powered planes and claiming the $10 million Ansari X prize.
- Astronomy
Planet Signs? Sifting a dusty disk
Infrared spectra of a disk of debris surrounding the young star Beta Pictoris reveals three distinct bands of dust, suggesting the location of a possible planet flanked by belts of asteroids or comets.
- Health & Medicine
Carotid Overhaul: Stents and surgery go neck and neck
Mesh cylinders called stents work as well as or slightly better than surgery in opening blocked carotid arteries in high-risk patients.
- Earth
Global warming won’t boost carbon storage in tundra
The notion that a warmer climate in arctic regions will lead to enhanced carbon sequestration in tundra ecosystems isn't supported by field data.
- Physics
Hurrying a nuclear identity switch
Radioactive beryllium-7 atoms locked inside molecular cages decay extraordinarily quickly.
- Health & Medicine
Turmeric component kills cancer cells
Curcumin, the component of turmeric that makes the spice yellow, shows anticancer effects in lab-dish tests and in experiments on mice.
- Health & Medicine
Fighting cholesterol with saturated fat?
Marrying a saturated fat to the plant-derived ingredient in certain health-promoting margarines creates an especially potent cholesterol-lowering food additive.
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Car deaths rise days after terror attacks
A spike in automobile fatalities in Israel 3 days after each of a recent series of terrorist attacks reflects a delayed, population-wide reaction to those violent incidents, two researchers propose.
- Health & Medicine
Adopted protein might be MS culprit
A protein called syncytin might play a role in causing degradation of the fatty myelin sheath that insulates nerves, damage that leads to multiple sclerosis.
