Thorne is governed by a Board of Trustees which makes policy level decisions that guide operations to ensure the fulfillment of Thorne’s mission. All of Thorne’s Trustees volunteer their time and contribute their talents in ways that best help Thorne connect youth to nature. 

Thorne’s programs are managed and implemented by an experienced staff of nonprofit professionals and environmental educators. Thorne maintains a small year-round staff and hires more than 30 seasonal instructors for its camp each summer. CLICK HERE if you are interested in joining the Thorne staff, and CLICK HERE to download Thorne’s organizational chart.

Dr. Oakleigh Thorne II / Founder, Honorary President, & Bird Banding Instructor
303.499.3647 x 104
[email protected]
Leann Arend / Deputy Director
303.499.3647 x 112
[email protected]

Leann joined the Thorne team in 2020.  She has ten years experience as Chief Operating/Financial Officer in Washington State, working with Outdoor Recreation and Conservation and Public Education Advocacy non-profits. She has a B.A. in Business Administration, Finance from the University of Washington.  Leann connected to nature as a kid growing up in Alaska; camping and fishing with her family and currently enjoys trail running, camping, hiking, biking, and skiing.

Stephanie Brudwick / Administrative Director
303.499.3647 x 100
[email protected]

Stephanie joined the Thorne team in 2004 and has a B.A. in Environmental Studies from the University of Colorado at Boulder. Stephanie is the registrar for Thorne’s Summer Camp, manages the facility at the Sombrero Marsh Environmental Education Center, and provides administrative support. She is conversant in Spanish.

Keith Desrosiers / Executive Director
303.499.3647 x 105
[email protected]

Keith joined the Thorne team in 2010 and has a B.A. in Government from Skidmore College and a M.A. in Public Administration from the Rockefeller College. Keith has served as an Executive Director, Development Director or Nonprofit Consultant for Colorado environmental nonprofits since 1997. Keith has extensive knowledge and experience in the areas of strategic planning, fundraising, operational efficiency, and board development.

Erica Fine / Program Manager - E Movement
303.499.3647 x 113
[email protected]

Erica joined Thorne in 2019 as the Program Manager for E Movement, a community-wide effort to advance the continuity, effectiveness, and access to environmental education in Boulder County. She also supports Thorne by providing leadership and support in several areas, including marketing and communications, research, and delivery of educational programs. Erica holds a master’s degree in Education from Harvard and a B.S. in Geology and Environmental Studies from Tufts University. She is passionate about collective impact and improving the quality of life for all children and families, especially through equitable access to nature in all forms.

Sarah Grove / Environmental Educator
[email protected]

Sarah joined our growing team here at Thorne in early 2021. She has a B.S. in Wildlife Ecology and Management from Auburn University in Alabama. For nearly a decade, Sarah has been working as an informal educator at non-profit organizations that focus on environmental education and early childhood education. Sarah is passionate about connecting people, especially children, and nature; fully believing that … “in the end we will conserve only what we love; we will love only what we are understand; and we will understand only what we” experience! (quote excerpt from Baba Dioum)

Paul Humes / School Programs Manager
303.499.3647 x 109
[email protected]

Paul joined the Thorne team in 2018 as the School Programs Manager and educator. He received his B.A. in Elementary Education from Ball State University in Indiana. His classroom experience ranges from Indianapolis, Indiana to Liverpool, England, and rural Thailand with the Peace Corps. He was also an overnight summer camp counselor, managed and designed curriculum for a primitive skills academy, and trained in the 8 Shields mentoring model at the Art of Mentoring Vermont. Paul connects with nature by trail running, biking, backpacking, and practicing wonder & awe with the youth he mentors.

Ruby Lopez / Boulder Community Liaison
303.499.3647 x 114
[email protected]

Ruby joined the Thorne team as Nature Kids Boulder’s Community Liaison and Bilingual Educator in 2021. She has a B.S. in Earth, Society, and Environmental Sustainability from the University of Illinois at Urbana-Champaign. For the past 4 years she has worked in several different sectors of the environmental field, from working in ecological restoration to providing job training and environmental education to marginalized communities of inner-city Chicago. She is an advocate for BIPOC and LGBTQIA+ communities and believes in harnessing the healing powers of nature to address the pain of inequity facing these communities.

Andy Maeding / Education Programs Mentor
303.499.3647 x 107
[email protected]

Anthony “Andy” Maeding joined the Thorne team in 2016. He has a B.S. in Recreation Resources Management from Colorado State University and a Montessori Lower Elementary Teaching Credential from Montessori Education Center of the Rockies. Andy has extensive experience cultivating nature connection with children of all ages, having led students on extended wilderness expeditions, sea kayaking, snorkeling, scuba diving, backcountry skiing, fly fishing and international travel experiences for more than two decades.

Caitie Maxwell / Development Director
303.499.3647 x 108
[email protected]

Caitie joined the Thorne team in 2021. She has a B.A. in Business from Southwestern University and a M.A. in Nonprofit Management from Case Western University. Caitie has over twelve years of fundraising experience within the nonprofit sector, with a focus on education and healthcare. Her love of nature has been a constant in her life since childhood and drives her personal time with family and friends.

Angela Myers / Program Director - Community Partnerships
303.499.3647 x 102
[email protected]

Angela joined the Thorne team in 2013 and has a B.A. in Geology from the University of Colorado at Boulder and an M.A. in Curriculum and Instruction from the University of Colorado at Denver. She has six years experience as a bilingual classroom teacher in the Denver Public Schools, infusing experiential learning into curriculum as her school’s Science leader. Angela also served as a Peace Corps environmental volunteer in Peru where she gained advanced proficiency in Spanish.

Kaitlyn Ogden / Environmental Educator
[email protected]

Kaitlyn has a B.A. in Environmental Studies and Geology from the University of Colorado in Boulder and joined the Thorne team in May of 2017 as a Field Assistant Intern for Thorne’s Summer Camp. She returned two years later in 2019 as a summer camp counselor and soon thereafter was hired as an Environmental Educator in January of 2020. Kaitlyn worked briefly as a Community Solar Salesperson and hopes to bring her knowledge and love of renewable energy to her teaching as well as her passion for childhood nature connection.

Carrie Riesberg / Summer Camp Manager
303.499.3647 x 110
[email protected]

Carrie Riesberg joined the Thorne team as a summer camp instructor in 2010, was hired as Summer Camp Coordinator in 2016 and now serves as the Summer Camp Manager. She has a B.S. in Business Administration and Entrepreneurship from the University of Colorado at Boulder and has extensive training and experience in special education and school-based mental health services, including eight years of experience as a behavioral specialist and paraeducator in elementary special education and as an after-school enrichment teacher.

Erin Saunders / Education Programs Director
303.499.3647 x 101
[email protected]

Erin joined the Thorne team in 2004 and has a B.S. in Zoology and Botany from the University of Washington. Erin has created curricula for many Thorne programs, written grants, and worked exhaustively with teachers, science coordinators, and district administrators as well as parents to ensure quality nature science programming for our community. Erin is a certified Project Wild facilitator and is conversant in Spanish.

Mattie Schuler / Preschool Director
303.488.3647 x 106
[email protected]

Mattie Schuler is the Preschool Director at Thorne Nature Experience. She holds a B.A. in both journalism and psychology from the University of Missouri and obtained an M.A. in Educational Psychology and an ECE teaching license through the Teacher Education Program at Boulder Journey School. Most recently, Mattie was the Program Coordinator for the pre-k Forest School Classroom at the Boulder JCC where she was also a lead teacher for three years. Mattie’s passion for the outdoors started as a child as she played in her big backyard in Wisconsin, and grew as her family took yearly vacations to the mountains during ski season. After undergrad, Mattie interned at Outside magazine where her passion for the outdoors grew tenfold and she realized that in whatever career, being outside was for her. Being able to combine both her passion for education and love for the outdoors is not only a dream job, but also allows Mattie to teach to a child-led, nature-based philosophy and curriculum. Her free time is usually spent snowboarding, writing, hiking and backpacking, and trying to pet as many dogs as she can.

Gwen Tenney / Thorne Nature Preschool Teacher
[email protected]

Gwen joined the Thorne team in 2010 as a Summer Camp Instructor and has a M.S. in Ecology from the University of Toledo and a B.A. in Environmental Studies from Lake Forest College. Gwen has served as an educator, coordinator, and conservationist with organizations like the Butterfly Pavillion, the Len Foote Hike Inn, and Joshua Tree National Park. Gwen is a published author and certified Project Wild facilitator.

Mollie Theis / Environmental Educator
[email protected]

Mollie joined the Thorne team as a summer camp instructor in 2019. She has a B.S. in Spanish and Sociology with an emphasis on Sustainability from Carroll University in Waukesha, Wisconsin. For the past four years she has worked in many different sectors of environmental education from leading overnight backpacking trips in the Sierras to teaching hands on environmental learning in urban Milwaukee. She strongly believes in the importance of reconnecting youth with nature and has a passion for creating memorable outdoor experiences for children from all demographic backgrounds.

Maggie Vest Engelman / Program Manager - Field Trip & Volunteers
303.499.3647 x 103
[email protected]

Maggie joined the Thorne team in 2012 through an internship and worked full time at Thorne as an AmeriCorps Member from 2014-2016. She has a B.A. in Environmental Studies and Ecology and Evolutionary Biology from the University of Colorado at Boulder, and a M.S. in Natural Science Education and Environment and Natural Resources from the University of Wyoming. Maggie’s passion is connecting students to their place. She has a wide range of experience from teaching students geology in the Tetons, investigating the scientific process with undergraduate students, to mentoring students on the amazing things they can find in their own backyards. She is passionate about the outdoors and on the weekends is likely to be found in the mountains backpacking.

Kara Wadenstierna / Lead Preschool Teacher
[email protected]

Kara joined the Thorne team in 2015 as a Summer Camp Instructor and has a B.A. in Elementary Education from Wheaton College. Kara brings to Thorne two years of primary teaching experience in Colorado’s Front Range, a year of educational non-profit work, and many summers working in and volunteering for Yellowstone and Rocky Mountain National Parks.

Regina Zaragoza Frey / Inclusiveness and Equity Manager
303.499.3647 x 111
[email protected]

Regina joined the Thorne team in 2020 as Inclusiveness and Equity Manager and has a double B.A. in International Affairs and Art History from CU Boulder. She is originally from Querétaro, Mexico, where she attended school before moving on to college in Boulder. Currently, Regina is pursuing an MSL degree with the CU Law School while working full time. Regina has been involved in Boulder’s nonprofit sector since she graduated in 2015, working with Safehouse Progressive Alliance for Nonviolence, Boulder Valley Women’s Health Center, and with the “I Have A Dream Foundation” of Boulder County. She is on the board of the Boulder Chamber and is one of the founding committee members of the LGBTQ+ Chamber of Commerce of Boulder County. Regina loves to stay engaged and active within her community and uses her role as Inclusiveness and Equity Manager to empower others to do the same.


Thorne is governed by a Board of Trustees which makes policy level decisions that guide operations to ensure the fulfillment of Thorne’s mission. All of Thorne’s Trustees volunteer their time and contribute their talents in ways that best help Thorne connect youth to nature.

Thorne Board of Trustees

Amanda Paulson / Chair
Christian Science Monitor - Staff Writer
David Brantz / Vice Chair
Kottke & Brantz, LLC
Chad Arnold / Treasurer
Door To Door Organics - Board of Directors
Jacquie McKenna / Secretary
Development Finance Consultant
Brian Bagley
Bagley Law Firm - Attorney
Graham Casden
Oceans First Divers – Owner
Pablo Hester
Clinica Family Health - Dental Operations Director
Chris Jacobs
Element Properties - Principal
David Kirk
Highland Real Estate Consulting
JD Mangat
Lafayette City Council
Kerry Merkel
Blue Mountain Montessori - Owner/Director
Anne-Worley Moelter
Movement Climbing & Fitness - CEO & Founder
Annika Paradise
Graduate Student & Parent
Sophie Ramus
Centennial Middle School - Teacher
Micah Shagoury
JSR Life Sciences - Senior Manager Strategic Planning
Jose Vietez
Boomtown Accelerator - Director
Mark Davison / Ex-Officio Trustee
City of Boulder Open Space - Community Connections and Partnerships Manager