How can science help save the wild finches Darwin made famous in the Galapagos Islands from invasive species?

By leaving cotton balls treated with a mild pesticide laying around. In an experiment, the wild finches used the cotton to help build their nests, which killed parasitic fly maggots and protected baby birds.

Self-fumigation works.

"We are trying to help birds help themselves," says biology professor Dale Clayton, senior author of a study outlining the new technique in Current Biology.

A gene that codes for a protein that scientists have found helps the body’s immune cells recognize and fight Group B Streptococcus (GBS) bacteria has been implicated in premature birth risk.

The bacteria are found in the vagina or lower gastrointestinal tract of approximately 15 to 20 percent of healthy women, but may cause life-threatening infections, such as sepsis or meningitis in newborns, especially those born prematurely.

It's a well-known fact that spending on health care has consistently grown faster than the rest of the U.S. economy but what's behind this trend is less certain.

Economists cite multiple variables: rising malpractice costs due to jury awards related to health care; 'defensive medicine', where unnecessary tests are run to have a paper trail if a lawsuit happens; a 'teach to the protocol' environment driven by regulations; the prevalence of diseases afflicting the U.S. population, including an increase in the kinds of conditions that are now considered diseases; and the rising costs of treating diseases.

Skin cancer is a common and growing problem, accounting for one in every three cancers diagnosed worldwide, according to the World Health Organization. Recent findings suggest that malignant melanoma, the most dangerous form of skin cancer, is has grown dramatically in the last few decades. 

Eczema is a blanket term for medical conditions that cause the skin to become inflamed. It affects about 10% to 20% of infants and about 3% of adults and children in the U.S. Most infants who develop the condition outgrow it at a young age.

A research team gave old mice -  the equivalent of 70- to 80-year-old humans - water containing an antioxidant known as MitoQ for four weeks and found that their arteries functioned as well as the arteries of mice with an equivalent human age of just 25 to 35 years.

The MitoQ antioxidant targets specific cell structures - mitochondria - and may be able to reverse some of the negative effects of aging on arteries, reducing the risk of heart disease, they conclude.

DURHAM, N.C. -- Along with our big brains and upright posture, thick tooth enamel is one of the features that distinguishes our genus, Homo, from our primate relatives and forebears. A new study, published May 5 in the Journal of Human Evolution, offers insight into how evolution shaped our teeth, one gene at a time.

By comparing the human genome with those of five other primate species, a team of geneticists and evolutionary anthropologists at Duke University has identified two segments of DNA where natural selection may have acted to give modern humans their thick enamel.

Teeth have been an invaluable resource for scientists who study evolution, the authors said.