Leona Woods. She was politely invited to pursue a more feminin task when she entered the scientific world at the age of 23. In a strong male dominatated environment, she became the youngest and only female of the team that built the world’s first nuclear reactor, called Chicago Pile-1. It was an extremely important project lead by his mentor Enrico Fermi. She devoted her whole life to science in general and nuclear research in particular until she died in 1986.