CNN: A legendary woman, a trailblazer, an American hero — Katherine Johnson

Opinion by Reshma Saujani

(CNN) When I’m traveling the world talking about Girls Who Code — whether to a classroom full of girls or to others during a big speech — there is one woman I always mention: NASA mathematician Katherine Johnson, immortalized by Taraji P. Henson’s portrayal in the film “Hidden Figures” as one of the key participants who helped enable America’s 20th-century space program.

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