Children of the Sklodowski family, Polish, c1870-1875. Left to right: Zosia, Hela, Maria (Marie Curie 1867-1934), Joseph and Bronya. (Photo by Ann Ronan Pictures/Print Collector/Getty Images)
Children of the Sklodowski family, Polish, c1870-1875. Left to right: Zosia, Hela, Maria (Marie Curie 1867-1934), Joseph and Bronya. (Photo by Ann Ronan Pictures/Print Collector/Getty Images)