Roger Clark is the Grand Canyon program director for the Grand Canyon Trust, a regional conservation organization founded in 1985. For the last six years, Mr. Clark has been providing leadership in the national and regional campaign to prevent new uranium mines from contaminating watersheds that flow directly into Grand Canyon. He works with congressional and Native American leaders, business interests, agencies, and city, county, and state leaders in securing the 20-year ban by the Secretary of the Interior on new uranium claims on more than a million acres of public lands that surround Grand Canyon National Park. In 2007, he helped to establish and currently administers a $5 million Renewable Energy Investment Fund, created in a settlement agreement with the owners of Springerville Power Plant. The Fund makes grants for renewable energy and efficiency projects in partnership with indigenous communities throughout the region. His career includes work as a river guide, naturalist, writer, museum education and exhibits director, university faculty, environmental educator (grades K-12), and environmental consultant. He is a second-generation Arizonan, graduate of Northern Arizona University and Yale University, and has been serving as an educator, advocate, and board member of Flagstaff Arts &Leadership Academy, Flagstaff Symphony, and other non-profit organizations based in Flagstaff since 1981. Joelle Clark, his spouse, does professional development with teachers through NAU’s Center for Science Teaching and Learning; son Jean-Philippe is a NAU graduate, working in experiential learning programs with youth; and daughter Janine is a freshman in the honors program at University of Arizona.