Uncategorized
- Anthropology
Northwest Passage: Americas populated via Alaska, genetics show
A single population of prehistoric Siberians crossed the Bering Strait into Alaska and fanned out to North and South America, a new genetic analysis of living Native Americans suggests.
- Planetary Science
Sister Planet: Mission to Venus reveals watery past
The Venus Express probe has found evidence that Venus once had more water than it does today, and has provided new measurements of the weather on Venus, proof of lightning on the planet, and signs of a formerly unknown hot spot near its south pole.
- Archaeology
Rolling Back the Years
Scientists are refining carbon dating techniques to make the archaeological timeline more precise.
- Health & Medicine
Dengue virus found in donated blood
Scientists have discovered that 12 units of blood donated in Puerto Rico in late 2005 contained the dengue virus.
- Health & Medicine
Sleeping sickness pill may work as well as injections
The first oral drug for sleeping sickness is showing effectiveness in a trial in central Africa.
- Health & Medicine
Bomb craters mean trouble for islanders
A skin infection in people living on the Pacific island of Satowan stems from swimming in ponds formed from World War II bomb craters there.
- Health & Medicine
Patch guards against Montezuma’s revenge
A patch worn on the skin delivers a vaccine against a form of Escherichia coli that causes traveler's diarrhea.
- Health & Medicine
Additives may make youngsters hyper
Common food colorings and the preservative sodium benzoate have the potential to foster hyperactivity and inattentiveness in children, a new study finds.
- Chemistry
Hydrogen makers
A new bioreactor produces hydrogen hundreds of times as fast as previous prototypes.
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ADHD kids show slower brain growth
A new brain-scan investigation indicates that attention-deficit hyperactivity disorder involves substantial delays in children's brain development.
- Anthropology
Ancient-ape remains discovered in Kenya
Newly unearthed fossils of a 9.8-million-year-old ape in eastern Africa come from a creature that may have evolved into a common ancestor of African apes and humans.
- Earth
Hey, What about Us?
The plight of polar bears may get most of the attention as climate change disrupts the Arctic ice, but plenty of other species, from walrus and seals to one-celled specks, are also going to see their world change radically.
