In prenatal ultrasounds or at delivery, many new parents look between their baby’s legs: The presence of a penis is taken as a strong sign that it’s a boy. For humans and other animals, development of a penis was thought to be driven by “male hormones” (androgens) produced entirely by…
“A health worker counts antiretroviral drug tablets for a patient at The AIDS Support Organisation (TASO) in the capital Kampala, Uganda” – Image: AP HIV transmission is a complex process with factors beyond just who you sleep with and how. The virus ultimately needs to find its way to the…