Math! Science! History!™

This is the sto­ry of Marie Tharp, the geol­o­gist and car­tog­ra­ph­er who helped prove the the­o­ry of con­ti­nen­tal drift and changed geol­o­gy for­ev­er, armed with noth­ing more than sonar read­ings, col­ored pen­cils, and a deter­mi­na­tion to reveal the unseen. The Ear­ly Years: A Qui­et Foun­da­tion Marie Tharp was born on July 30, 1920, in Ypsi­lan­ti, Michi­gan. Her father, William Tharp,

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