705,620 articles

Dispelling a common myth, researchers from the Johns Hopkins Children`s Center say vaginal reconstruction should be a matter of preference for most teens or adult women born with a type of inter-sex condition marked by the presence of both female and male genitals. The findings of the research are being presented at the American Academy of Pediatrics Conference Oct. 26 through Oct. 30 in San Francisco.

Scientists have shown that birds with higher stress levels adopt bolder behavior than their normally more relaxed peers in stressful situations. The scientists studied zebra finches, which had been selectively bred to produce three distinct types -- "laid-back," "normal" and "stressed." The group was surprised to find that the "stressed" birds were bolder and took more risks in a new environment than the group that was usually more laid-back.

Several recent studies demonstrate the flexibility of targeted therapy techniques, where new drugs can be developed and tested in human trials more quickly and safely than ever before. Therapeutics demonstrate the flexibility of targeted therapy techniques, where new drugs can be developed and tested in human trials more quickly and safely than ever before.

Stars in dwarf spheroidal galaxies behave in a way that suggests the galaxies are utterly dominated by dark matter, astronomers have found. Astronomers measured the velocity of 6,804 stars in seven dwarf satellite galaxies of the Milky Way. They found that, contrary to what Newton's law of gravity predicts, stars in these galaxies do not move slower the farther they are from their galaxy's core.

Most women, and large numbers of men, expressed interest in having cosmetic surgery, university scientists report. Forty-eight percent of women surveyed said they would be interested in cosmetic surgery, liposuction or both, and another 23 percent said they would possibly be interested. Among men, 23 percent said they would be interested in surgery, with 17 percent expressing possible interest.

Forest fragmentation threatens biodiversity, often causing declines or local extinctions in a majority of species while enhancing the prospects of a few. A new study shows that parasites can play a pivotal role in the decline of species in fragmented forests. This is the first study to look at how forest fragmentation increases the burden of infectious parasites on animals already stressed by disturbances to their habitat.

A new study explores the role of natural enemies, such as predators and parasites, for mixed mating, a reproductive strategy in which hermaphroditic plants and animals reproduce through both self- and cross-fertilization. The findings highlight the possible evolutionary consequences of these interactions. Mating systems are a complex set of traits that reflect interactions among genetics, population structure, demography, and numerous environmental factors that influence mating success.