In the mind of many people sex discrimination is a natural phenomenon starting at birth. One is either born a woman or a man. However, the naturalization of sexism is the result of knowledge that male scientists, writers, historians, and philosophers have produced. Women’s rights activists and scholars have gradually realized that without the critique of the androcentric knowledge one cannot oppose gender oppression and gender stereotypes. In this issue of Zannegaar we will look at sexism in science and in the production of scientific knowledge.