Jemison worked at NASA from 1987 to 1993. She later started The Jemison Group, Inc., which created ALAFIYA, a satellite-based telecommunications system. This system was to be used to bring healthcare to developing nations. She also was a professor in the Environmental Studies Program at Dartmouth College. There she directed the Jemison Institute for Advancing Technology in Developing Countries. She has studied astronomy, zoology, archaeology, and many other things.