About a millennium ago, in Cairo, someone completed a large and richly illustrated book. In the course of thirty-five chapters, our unknown author guided the reader on a journey from the outermost cosmos and planets to Earth and its lands, islands, f...

"For a zitty face. Take urine eight days old and heat it over the fire; wash your face with it morning and night". In late medieval England, ordinary people, apothecaries and physicians gathered up practical medical tips for everyday use. While some...