Mary Leakey's work on archaeological digs in the 1930s led her to her husband, Louis, as well as a great interest in prehistoric man. Together, the two found fossils that proved apes and humans had common ancestors. Louis Leakey hired young Jane Goodall in the 1950s to study the behavior of chimpanzees, to further prove the connection between humans and apes. Goodall was slowly accepted into a wild chimpanzee community, the first person to accomplish this. Readers will love learning about the incredible discoveries of these two extraordinary women, whose lives will forever be entwined by a mutual desire for scientific knowledge.