Six children playing and running in shallow water at a lake with mountains in the background under a blue sky with clouds.

A BRIEF HISTORY OF THORNE NATURE EXPERIENCE

Thorne Nature Experience, originally founded in 1954 by Dr. Oakleigh Thorne, II, in Boulder, Colorado, as the Thorne Ecological Institute, has been inspiring people to connect with nature for over 70 years.

In its first three decades, Thorne tackled a wide range of environmental initiatives, from land conservation to educating governments, businesses, adults, and children across the country about the Principles of Ecology and their ties to economics, human well-being, and environmental health.

As the environmental movement grew in the 1980s and 90s, more organizations began focusing on conservation and resource protection. In response, Thorne honed its mission around its greatest strength: providing high-quality environmental education for youth in the Boulder and Denver Metro Area.

This focus led to the creation of teaching facilities at Sombrero Marsh in Boulder and Waterton Canyon in Littleton, and in 2024, the opening of the Lafayette Nature Center, an inspiring home for community nature connection.

Over the past seven decades, Thorne has connected more than 300,000 children and adults to the outdoors, becoming a nationally recognized leader in environmental education.

An older man with gray hair and glasses showing something to three young boys outdoors on a grassy field, with trees in the background.
Oak Thorne helping a camper band his first bird as part of Thorne Nature Experience's Bird Banding Programs

THORNE’S FOUNDER, DR. OAKLEIGH THORNE, II

Dr. Oakleigh Thorne, II was born in NY in 1928, and spent his childhood in a house surrounded by 80 acres of nature. He would spend his days freely exploring the woods, streams, and lake on the property, searching for bird nests, catching turtles, and chasing fireflies. In these formative days of his life, he was learning more than the sound of bird calls; he was learning that to respect our Earth, children must have an early awareness of the natural world. It is this lesson that has fueled his life’s work and the legacy of Thorne Nature Experience, which was originally founded as Thorne Ecological Institute in 1954.

Throughout his life, Oak fell under the mentorship of some extraordinary people. At the age of 13, Oak’s biology teacher, Frank Trevor, brought textbook lessons to life by taking his class into the field, and he taught Oak bird banding, which he still does with kids today. In his 20’s, Oak spent several summers at Valley Ranch Southwest of Cody, Wyoming, where he met Roy Glasgow, a Native American who Oak describes as a true “mountain man.” Roy helped Oak foster a spiritual connection to the land and taught him everything he knew about the local plants and animals, wilderness survival, and wilderness ethics. When he was earning his Masters degree in Conservation at Yale, Oak met professor Paul B. Sears who mentored Oak through a project to save the Sunken Forest on Fire Island. Oak wrote the first grant to pass through a tiny, newly-formed organization that had just received its non-profit status, called The Nature Conservancy. He received the grant, and went on to save the Sunken Forest, which is now part of the Fire Island National Seashore. With this success, Oak learned that he could make a real difference with his life and that one’s actions can save land and change the world.

Oak continued to experience many successes in his adult life. He started his own family and dedicated his life to instilling in his children the love and respect for nature that makes up every fiber of his being. In 1954, Oak founded Thorne Ecological Institute, now known as Thorne Nature Experience, when he was a graduate student in Biology at the University of Colorado and also founded Thorne Films, an educational film company that over two decades produced more than 800 titles. In the 1960s, Oak was on the City of Boulder Parks and Recreation Advisory Board, the University of Colorado’s Natural Area Committee, and PLAN-Boulder County. He helped the campaign to pass a sales tax to create the City’s Open Space program, and personally purchased Settler’s Park, saving it from development and owning it until the City could afford to buy it back from him at the same price. He also helped raise money to purchase Enchanted Mesa in Chautauqua Park, preventing hundreds of homes and a hotel from covering the landscape. Oak’s passion for nature took him to Wyoming in 1969 to purchase and manage Valley Ranch, the oldest and most famous Dude Ranch in Wyoming. Oak returned to Boulder in 1987 and helped found the Environmental Studies Department at Naropa University, and has been working at Thorne Nature Experience ever since, running its bird banding program and connecting youth to nature.

Today, in addition to his work at Thorne, Oak serves on the External Board of the Yale Institute for Biospheric Studies and is on the Leadership Council for the Yale School of Forestry and Environmental Studies. He is also on the Advisory Board for the American Music Research Center, as well as the Science and Technology Committee for the Conference on World Affairs, both at the University of Colorado.

THORNE NATURE EXPERIENCE – THE EARLY YEARS

In 1954, Dr. Oakleigh Thorne, II founded Thorne Ecological Institute, now Thorne Nature Experience, with the mission to carry out ecological research and education, and in 1957, Thorne held its first summer camps for youth. Dr. Bettie Willard was hired as the organization’s first Executive Director in 1962. With Bettie at the helm, the organization primarily educated business, government, and professional leaders about the Principles of Ecology and how they relate to economics, helping them to solve challenging environmental problems. To aid in this effort, Thorne held the Seminars on Environmental Arts and Sciences (SEAS) in Aspen from 1967-1984. It was through SEAS that Thorne led the nation’s first Environmental Impact Study (EIS) to determine how to develop a mine on public land near Berthoud Pass with as little impact as possible – something now widely regulated by the Federal government through the National Environmental Policy Act (NEPA). During the 1960’s and 70’s, Thorne also played a leading role in the creation of many respected environmental organizations we know today, such as The Colorado Field Office of The Nature Conservancy, the Aspen Center for Environmental Studies (ACES), The Keystone Science Center, the Audubon Society of Greater Denver, the Colorado Open Space Coordination Council, Balarat and Calwood Outdoor Education Centers, and the Colorado Environmental Coalition, now Our Colorado.

Three children stand outdoors by a river, examining a container with small creatures inside, smiling and enjoying nature.
A group of people lying on the grass in a circle in a mountain landscape, engaging in a conversation.

SEAS Aspen: Bettie Willard teaching on Independence Pass