News
- Paleontology
Did Mammals Spread from Asia? Carbon blip gives clue to animals’ Eden
A new dating of Chinese fossils buttresses the idea than an Asian Eden gave rise to at least one of the groups of mammal species that appeared in North America some 55 million years ago.
- Health & Medicine
Clever Combo: Hybrid vaccine prevents West Nile virus in mice
A vaccine fashioned from pieces of dengue virus and West Nile virus protects mice against West Nile fever, suggesting it might work in people.
- Health & Medicine
Troubled Hearts: Antibiotic might fend off second attack
An antibiotic might protect people with heart disease from future coronary events, according to the results of a small-scale trial.
- Astronomy
Telescope Tuned Up: Back to work for orbiting observatory
A rejuvenated Hubble Space Telescope floated away from the space shuttle Columbia on March 9 after astronauts spent a week renovating the observatory.
- Health & Medicine
Stem Cell Success: Mice fuel debate on embryo cloning
In mouse studies, scientists have used a technique called therapeutic cloning to create personalized replacement tissue.
- Health & Medicine
Eight hours of sleep may not be so great
Sleeping 8 to 9 hours a night doesn't necessarily translate into a longer life.
- Health & Medicine
Alzheimer’s disease vaccine abandoned
Safety concerns forced the shelving of tests of an experimental vaccine for Alzheimer's disease.
- Plants
Fringy flowers are hard to dunk
The fringe on the edges of the floating blooms of water snowflake flowers helps protect the important parts from getting drenched in dunkings.
- Planetary Science
Probing Jupiter’s big magnetic bubble
Simultaneous measurements by two spacecraft have probed in greater detail than ever before Jupiter’s magnetosphere, the invisible bubble of charged particles that surrounds the giant planet.
- Health & Medicine
Lack of nutrient turns flu nasty
A dietary deficiency in selenium, an essential trace mineral, may cause a usually harmless strain of the flu to mutate into a virulent pathogen.
- Health & Medicine
New human virus tied to obesity
Researchers have identified the second member of a class of human viruses that may increase people's susceptibility to obesity.
- Physics
Magnetism piece fits no-resistance puzzle
Experimenters have found evidence that a type of magnetic behavior correlated with the onset of zero electrical resistance in some so-called high-temperature superconductors is generic to the whole class of those materials, yielding a possible clue to how the substances lose their resistance.
