Every year the Switzer Foundation provides funding for 20 scholars and innovators in terminal graduate programs in New England and California. The scholarship is $15,000 for the course of a year for people doing work on sustainability, agriculture, urban development, and related fields/issues.
Their call of for applications says, "Candidates for the Fellowship should demonstrate outstanding leadership potential, be able to clearly communicate how they will apply their technical or professional expertise to environmental issues, and convey a clarity and sense of purpose about their work.  Leadership qualities valued by the Switzer Foundation include a desire to work collaboratively and across disciplines, a commitment to applied environmental work, interest in developing leadership skills and an appreciation of the importance of networks.  Candidates for the Switzer Fellowship are chosen not only for their excellence in academic and scientific or technical work, but also on their true dedication to aggressively pursue practical solutions to environmental problems."
If this sounds like you or anyone your know, check out the application instructions HERE, and look at last year's grantees HERE.