A once-robust H.I.V. treatment and prevention system, credited with saving hundreds of thousands of lives, has begun to ...

In Kafue National Park, Zambia, a cunning otter bites a crocodile twice its size on the tail. This footage captures the reaction of the two-and-a-half-metre long crocodile after being bitten by the ...

The devastating effects of human-induced climate change are now a lived reality rather than a distant possibility. Together with the La Niña weather phenomenon, climate change has intensified extreme ...

A new study looks at thousands of years worth of data and finds that malaria hot spots have played a critical role in shaping where humans settled and either thrived or failed to thrive.