Sancho I, ruler of the kingdom of Léon in the north of modern-day Spain, was overthrown by rebel nobles in A.D. 958. Their motive, even by the turbulent politics of the day, was an unusual one ...

Medicine was an important part of medieval Islamic life; both rich and poor people were interested in health and diseases. Islamic doctors and a number of scholars wrote profusely on health and ...

The Islamic Empire was a time of great innovation, especially in maths, science, and medicine. Arab mathematicians helped to popularise the Indian number system, with its symbol for zero ...