For centuries, women have made important contributions to the sciences but, in many cases, it took far too long for their discoveries to be recognised — if they were acknowledged at all. And too often, books and academic courses that explore the history of science neglect the remarkable, groundbreaking women who changed the world.  Now is time to change this! This Mighty Girl blog shares the stories of 16 historic female scientists who have blazed new trails in their disciplines.  Share them with girls you know.