Four individuals acquired the virus in a region of north Miami, health officials report. 

Scientists still don’t know exactly how some commonly used drugs work. Here’s a look at three such compounds.

High school and college-level oral examiners graded women higher than men in male-dominated fields.

Targeting tau antibodies does not require effector function, researchers report.

Captive ape produces more than 500 vowel-like sounds, offering clues to how speech evolved in humans.

Researchers in Brazil ponder whether virus alone causes birth defects; Colombia declares epidemic over; first Zika-related microcephaly case reported in Europe

The animals, some of which were cloned from the same tissue as Dolly, appeared as healthy as non-cloned sheep, a study suggests.

More than 1.5 million childbearing women could be at risk of infection; pregnancy delays may be insufficient to prevent infection-related birth abnormalities; second study shows low risk of international spread due to Olympics; CDC updates prevention recommendations

Possible case of locally acquired infection in Florida; experimental vaccine approved for US clinical trials

The brains of primates and mice follow the same exponential rule of connectivity, according to a study.

The same populations of brain cells encode memories that occur close together in time, according to new research.

A new map of human cortex combines data from multiple imaging modalities and comprises 180 distinct regions.