From a young age, Marie Tharp wanted to be a scientist. In the midtwentieth century, women were not welcome in the sciences, but Marie got a job in a laboratory at Cambridge University, New York. But then she faced another barrier women were not allowed on the research ships (they were considered bad luck on boats). So instead, Marie mapped point after point and slowly revealed a deep rift valley in the ocean floor. She mapped the single largest geographic feature on the planet, all from her small, cramped office.

Binding: Hardback;32 pages; Publisher: Prentice Hall Press; Classification: YN; Weight: 556 g; Dimensions: 238 x 261 x 13

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