About ACES Aspen Center for Environmental Studies (ACES) is a nonprofit environmental science education organization with three locations in the Roaring Fork watershed: Hallam Lake, Rock Bottom Ranch, and the Catto Center at Toklat. Making more than 125,000 annual education contacts, ACES reaches Colorado residents and visitors through guided hikes, environmental science lessons in schools and in the field, kids camps and adult classes, public lectures, community events, environmental education consulting, and more. Our programs focus on ecological literacy, regenerative agriculture, forest and ecosystem health, land restoration, and environmental civic leadership. ACES also partners with land trusts, public agencies, government entities, and other non–profits to collaborate on regional land stewardship efforts. Projects include restoration and cooperative management on open space, public lands, and private lands under conservation easement.
Trustees Daniel Shaw, Chair
Jerry Murdock
Sam Brown
Robert Musser
Neal Dempsey
Walter Obermeyer, Treasurer
Andy Docken
Ben Pritzker
Ryan Elston, Vice Chair
Barbara Rosenberg
Mark Hamilton
Sheri Sanzone
Reenie Kinney
Ashley Schiff Ramos
Leslie Lamont
Rachel Sherman, Secretary
Kim Master
Maile Spung, Officer
Diane Moore
Colter Van Domelen
Gina Murdock
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