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An unprecedented five-year study aimed to find out whether the treatments to stop the spread of HIV in the West would work in sub-Saharan Africa.

Researchers identified a strain of bacteria that flourishes in the guts of athletes after exercise. When transferred to mice, it gave a big boost in endurance. Could runners' probiotics be on the way?

Harvard professor Dr. Eugene Richardson explores colonialism's impact on global health in Epidemic Illusions: On the Coloniality of Global Public Health.

The wriggling parasites are a scourge around the world. And in some ways, other countries are better at fighting them than the U.S. But a new effort in the rural South shows promise.

National security officials say Russia is again trying to disrupt the election. But this time, it doesn't have to work so hard because Americans are spreading mistruths and doubts about the election.

Explore alien worlds, Nordic forests, and European countrysides in these point-and-click games — which may not have been designed specifically for kids, but will definitely keep them entertained.

The suspect in the Toronto van attack embraced a misogynist ideology. We’ll look at so-called "incels."

Agnes Igoye has a lot of gripes about the way women are treated in Uganda. But she has great hope that women will thrive — and that men will get with the program.

Well, maybe not quite as excited as the U.S. seems to be.

A new project is attempting to write an obituary of every homicide victim in Philadelphia, just as the city grapples with a spike in murders. The aim is to put human faces to the grim statistic.