As Chief Scientist at NASA Langley Research Center, he is responsible for technical oversight and advanced program formulation.
From 1993 to 1996, she became the youngest person and first woman to hold the position of NASA Chief Scientist, serving as the primary scientific advisor to the NASA administrator and the principal interface between NASA headquarters and the broader scientific community.
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From 1982 to 1987, as NASA Chief Scientist, McDonald was a principal adviser to the NASA administrator and other senior officials.
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He was a key force behind several initiatives and programs of the National Aeronautics and Space Administration, for which he served as chief scientist.