Researchers say the skull belongs to an Australopithecus species once thought to be a predecessor to “Lucy,” but now that relationship is murky.

In Niger, fewer kids die when health workers administer azithromycin routinely, perhaps because of a shift in the composition of gut microbes.

Unlike other populations living at high altitude, Andeans didn’t rely on hypoxia-related genes.

A scientist confirms a new species of patas monkey in Ethiopia.

Breaking norms, the World Health Organization chooses Tedros Adhanom Ghebreyesus, a non-MD from Africa, as its new director-general.