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.
