Did you know that women made many scientific contributions, but their names were hidden and their discoveries attributed to men? This phenomenon is so common that it even has a name: the Matilda Effect. American historian of science Margaret W. Rossiter coined the term in 1993 in honor of Matilda Joslyn Gage, a prominent suffragist and abolitionist who had highlighted the importance of women inventors almost a century earlier. In an attempt to give them back at least some of the recognition they deserve, in this article, we have selected 10 women who changed the history of humanity.