Sometimes infecting volunteers with a disease can lead to new treatments. But how much risk and compensation is acceptable for those in poor nations?
If the tracking effort nets long-term funding it would be Africa's largest demographics project
Two decades after genocide, the African country tries harnessing science and technology to rebuild its economy
Scientists are now exploring the long-term consequences of the potent drug cocktail used to combat the disease
A scientific report demolishes the assertions used to back the criminalization of homosexuality