Contact lenses that treat depression? The idea is tantalising, but the science is still in its earliest stages.

Understanding genetics can help explain differences in disease susceptibility across populations, informing medical research and public health strategies.

Floods regularly devastate Lagos’s informal workers, but traders and residents have built their own systems to adapt where the state has failed.

Julius Malema’s skills at building a party and running a tight ship have been bolstered by his charisma and speech-making capability.