Katherine Johnson, who has died at the age of 101, was an amazing woman. But up until a few years ago, hardly anyone had heard of her or her achievements. She was a mathematician and she worked for NASA. But on paper, neither of those facts would make her stand out from the crowd. Add a few more facts – she was a woman, she was black and working in the US in the 1950s to early 1960s – and the scale of her success becomes more apparent. Johnson’s story and significant contributions to the US space program, along with…

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