The current focus on all things "green--greener--greenest" has found its way into the realm of continuing higher education through a proliferation of courses and programs. A recent Internet search on the phrase "sustainability certificate" produced over 7,600 results, reflecting a strong perceived or real demand. In this article, the author traces the origin of the environmental movement in the US to "Earth Day" in 1970 and then organizes her discussion under rubrics on (1) sustainability in the US; (2) the corporate response; (3) sustainability in higher education and continuing higher education; (4) green marketing and environmental consumerism (including "greenwashing"); (5) results from original market research survey; and (6) practical next steps for continuing higher educators. She hopes this article helps raise the awareness of continuing education leaders and practitioners to the various nuances of sustainability from the student perspective. A list of references and additional bibliography is included. (Contains 4 charts.)