The scientists and mathematicians in sought answers to these and many other fascinating questions. And it’s lucky for us they did. Without their vision, insight, and hard work, the world would be a sicker, dirtier, and more dangerous place. The twenty groundbreaking women—including Rosalind Franklin, Marie Tharp, Shirley Anne Jackson, and more—came from all kinds of backgrounds and had all kinds of life experiences. Some grew up rich. Some grew up poor. Some were always the smartest kid in class. Some struggled to do well in school. But all had one thing in common: They were born curious. Are you curious, too? Read on.