News
- Planetary Science
Howdy, Neighbors: Long-term study finds a batch of red dwarfs
Astronomers have found 20 previously unknown star systems that lie within 33 light-years of Earth.
- Animals
New Butterfly: High-alpine species from low-life parents
Little bluish butterflies high in the Sierra Nevada could be one of the few animal species to have arisen from crossbreeding of two other species.
- Health & Medicine
Cancer Link: Gene regulates progesterone effect on breast cells
The BRCA1 protein regulates the effect of pro-growth progesterone, which could explain why having a mutated BRCA1 gene predisposes a woman to breast cancer.
- Earth
Leaden swan song
Large numbers of trumpeter swans are succumbing to lead poisoning as a result of ingesting old shotgun pellets in areas where use of lead shot has been banned for more than a decade.
- Earth
No-stick chemicals can mimic estrogen
Some of the perfluorinated compounds used to impart nonstick properties to fabrics and cookware can not only activate a receptor for sex hormones but also inappropriately feminize fish.
- Earth
Sharks, dolphins store pollutants
Florida's top aquatic predators are rapidly accumulating high concentrations of brominated flame retardants and other persistent toxic chemicals.
- Earth
Could Prozac muscle out mussels?
Antidepressant drugs may be depressing wild-mussel populations.
- Health & Medicine
Test identifies people at cardiac risk
Measurement of an electrical abnormality in the heart aids doctors in determining who is most at risk for cardiac arrest.
- Health & Medicine
Belated angioplasty saves no lives
A common heart procedure called angioplasty doesn't save lives if it is performed more than a couple of days after a heart attack.
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Oceans reveal secrets of viruses
Scientists have completed the first survey of virus DNA in oceans around the world.
- Tech
Safety practices surveyed
Nanotechnology companies and laboratories largely rely on the same safety practices that they use when working with conventional chemicals, an international survey reports.
- Earth
Balancing Act: El Niños and dust both affect coral bleaching
Most of the annual variation in the extent of coral bleaching in the Caribbean is driven by two factors: the amount of dust and other particles suspended in the atmosphere, and the climate phenomenon known as El Niño.
