In 1834, a 22-year-old Yoruba man who would come to be known as Manuel Vidau was captured as a prisoner of war and sold to slave traders in Lagos, today the largest city in Nigeria. A Spanish ship ...

Magnetic resonance imaging (MRI) is a non-invasive biomedical imaging technique that uses a strong oscillating magnetic field to induce endogenous atoms such as hydrogen, or exogenously added contrast ...