Hypatia of Alexandria: An ancient mathematician, astronomer, and philosopher in a male-dominated era.
Madam C.J. Walker: Pioneering African-American entrepreneur and philanthropist in the beauty industry.
Ada Lovelace: A visionary mathematician considered the world's first computer programmer.
Ibn Battuta: A Moroccan explorer who traveled extensively during the 14th century.
Ching Shih: A formidable female pirate who commanded a vast fleet in the South China Sea.