n United States sexual physiologist whose hunch that progesterone could block ovulation led to the development of the oral contraceptive pill (1903-1967)
n United States sexual physiologist whose hunch that progesterone could block ovulation led to the development of the oral contraceptive pill (1903-1967)
n the Italian pope who fought to establish the supremacy of the pope over the Roman Catholic Church and the supremacy of the church over the state (1020-1085)