Diana Madson

Founder & Executive Director


Growing up in Northern California, Diana Madson spent much of her life in the great mountains of the Sierra Nevada. Devoting her education and career to protecting these pristine landscapes and vibrant communities, Diana is driven to catalyze change where it counts.

The Mountain Pact developed from Diana’s graduate research at the Yale School of Forestry & Environmental Studies, where she explored how climate change has transformed mountain resort communities. Over the course of her research, including interviews with local governments, businesses and nonprofit groups, Diana identified essential gaps in knowledge and obstacles preventing action. Diana has built the Mountain Pact specifically to overcome these obstacles. 

In addition to her work with the Mountain Pact, Diana leads Sierra CAMP, the Climate Adaptation & Mitigation Partnership (Sierra CAMP), at Sierra Business Council. Sierra CAMP is a collaborative effort designed to reduce the burden of climate impacts on communities and ecosystems throughout the Sierra Nevada and in the downstream urban communities that depend on those rural resources. 

Prior to the Mountain Pact, Diana was the Founder and Director of Yale University’s Team Climate, a climate change media campaign that partnered with 16 Olympians at Sochi to reach over 315 million people with the message that climate change is compromising winter sports. Diana has also worked for Protect Our Winters on the Climate Change Leadership Group and for the Climate Registry where she consulted over 400 corporate and government clients on greenhouse gas accounting.

Diana received her Master of Environmental Management from the Yale School of Forestry & Environmental Studies and graduated with Highest Distinction from the University of California, Berkeley with a B.S. in Society & Environment and a B.A. in Rhetoric.

Maddie Rehn

Project Director


Maddie was born and raised in the Colorado Rockies. Her backyard was the White River National Forest. With twelve ski resorts, eight wilderness areas, and endless miles of trails, it was easy for Maddie to gain a deep appreciation for alpine environments and mountain communities. Seeing firsthand the changes of climate at high altitude, she has been dedicated to the informed stewardship of the earth and improved management approaches vital to cultivating sustainable mountain communities.

She received her Bachelor’s of Arts in Environmental Studies with an emphasis in Natural Resource Management from Western State Colorado University of Gunnison, Colorado. Focusing on the fundamentals of and relationships between socio-economic drivers, environmental sciences, and political influences Maddie gained the knowledge base and skills to think holistically about the emerging study of sustainability. Living deep in southwest Colorado, she worked in partnership with local advocacy groups to develop and promote programming for improved ecological security.

Maddie is more than ever aware and motivated to catalyze meaningful change for improved environmental, social and economic stability in mountain towns, so she has returned to school to earn a masters degree in Environmental Management. Not only is she motivated by her love of the outdoors, but also by the community of people who live amongst the mountains. 



Jocelyn grew up exploring the mountains of Southwest Colorado where her love and appreciation for open spaces and public lands began to develop at a young age. She has always been deeply drawn to the unique communities and ample opportunities for recreation that Colorado mountain towns have to offer. It was while Jocelyn was working as a field instructor for the Colorado Outward Bound School (COBS) that her passion for protecting the environment was cemented. Seeing the impact that wild places have on the minds of other young people inspired her to seek ways to protect the alpine ecosystems essential to outdoor recreation and the economies of the mountain towns that she calls home.

Her work for COBS inspired Jocelyn to return to college to study Environmental Biology and Ecology and Environmental Studies at Western State Colorado University (WSCU). Through coursework at WSCU Jocelyn has been encouraged to seek ways to make an impact in the national climate conversation. She hopes to find holistic ways to implement the important findings of scientists into working policies and solutions to help reduce the impacts of climate change.