The risk of getting dementia has been dropping for decades. Why? Research suggests education's effect on the brain and good cardiovascular health help.
The push by Syrian government forces and their allies in the northern city of Aleppo has also displaced some 51,000 civilians since the beginning of last week, according to the U.N.
Universities are setting standards for volunteer global health programs in developing countries — so both the student and the local people can have a good experience.
The possibility that the Zika virus is linked to the birth defect microcephaly has sparked a public debate about women's reproductive rights in Latin America.
Meet Aedes aegypti. It's an ideal spreader of disease — from its attraction to trash to its habit of sipping blood from lots of folks in one feeding spree.
Women report more bad side effects from medicines than men do. Researchers say the discrepancy may stem in part from how biomedical research is conducted at its earliest stages in animals.
Though Zika was discovered in 1947, few scientists since had studied the virus. Now, while some check its genes, others turn to placental cells for clues to any link between Zika and birth defects.
For decades, Zika was considered a mild virus that rarely made people ill. Suddenly it seems to be causing serious problems and is spreading across the Americas. Here's the latest news.