As they close in for the kill, the flying mammals use quieter echolocation to focus on the chase.

Whether the galls that aphids make on witch hazel leaves are red or green is associated with a gene expressed in the insects’ salivary glands.

Imaged in real time in living people, immune cells at the surface of the retina could serve as biomarkers to detect retinal and possibly neurological diseases and track their progression.

The thicker the flower petals’ cuticle, the more fragrance compounds the plant releases, according to a recent study.

The recently discovered long noncoding RNAs seem to boost the production of specific proteins in the cell by interacting with RNA-binding proteins, researchers find.

A pathway involved in the adaptive immune system, a relative newcomer in the world of pathogen defense, may have a more ancient role in protecting cells from invading viruses.

Researchers disentangle complex connections among vegetation, herbivores, and dung in the South African savanna.

Long-lived species decrease their reproduction more than short-lived species in response to lower-than-normal precipitation, and thereby gain a survival advantage, a study finds.

The same toxin targets different receptors in prey and conspecifics to deliver either a lethal or non-lethal blow.

After weeks of training, the muscles of two macaques exhibited greater responses to stimulation of the reticulospinal tract in the brain stem than they had before, suggesting that strengthening the neural pathway is key to getting stronger. 

A study in two macaques reveals the importance of increasing connectivity between muscles and the reticulospinal tract that runs from the brain stem down the spinal cord.

Comparing the brain scans of high-impact rugby players with those of athletes in noncontact sports, such as rowing and swimming, revealed tiny, yet significant, differences in the brain’s white matter.

Patterns of neural activity known as alpha waves, long thought to originate in the thalamus, may actually stem from a different brain region entirely.

Two gene variations might help explain why some people experience chronic wounds.

The gene BCO2 enables male and female members of some bird species to display dramatically different color patterns.

In some finch species, the difference between colorful males and muted females comes down to one gene, BCO2, which encodes an enzyme that degrades carotenoids.

Transcripts circulating in the blood provide real-time information about maternal, fetal, and placental health.

A study suggests the potential for a noninvasive diagnostic that could detect tumors early and differentiate between disease types.

Lactation boosts the quantity and quality of insulin-producing beta cells in the pancreas, likely reducing a woman’s risk of developing type 2 diabetes.