Sallie (Penny) Chisholm '69 will receive the National Medal of Science for her revolutionary work in oceanography, especially the role played by photosynthetic microorganisms in sustaining ocean ecosystems. Mon, 07 Jan 2013 21:10:28 -0800 Alumni,Campus,Scholarship,Admissions,Career Development,Sallie (Penny) Chisholm '69,National Medal of Science,President Barack Obama,MIT,science, Mon, 07 Jan 2013 21:10:28 -0800