As TESI settles into its new office space, Sadie Mills steps into the role of interim director. She brings both continuity and a steady, forward-looking vision shaped by years of dedication to the institute’s mission. 

As a founding staff member, Mills began as program coordinator, and she was promoted to assistant director in 2025. Over the years, she has played a central role in TESI’s administration while also leading impactful initiatives that extend the institute’s reach across Florida and beyond. Her work has been especially instrumental in fostering broader impacts collaborations and implementing grant-funded programs, including Swamp for the Springs. 

Her leadership is perhaps best exemplified through the creation of the Environmental Leaders Fellowship, a program that expanded to the Environmental Leaders Network, which is one of TESI’s signature efforts to empower emerging environmental professionals. In recognition of this work, Mills received the University of Florida’s 2023 Superior Accomplishment Award Division Three, underscoring both her innovation and her commitment to meaningful, community-centered education. 

Mills holds bachelor’s degrees in ecology and evolutionary biology and anthropology from the University of Arizona, and a master’s degree in environmental studies from the University of North Carolina Wilmington. 

She succeeds Dr. Megan Ennes, Associate Curator of Museum Education, who concludes her three-year appointment as Director. 

Under Ennes’ leadership, TESI experienced significant growth, particularly through the Scientist in Every Florida School (SEFS) program, which reached a milestone 5,000th classroom visit and expanded its impact to 81% of Florida counties. She also secured key funding from the National Academies to sustain the Environmental Leaders Fellowship and from the National Science Foundation to support teacher professional development. 

Beyond program growth, Ennes strengthened TESI’s connections across campus and within the broader community. Initiatives like expanding the IFAS Community Action Projects for the Environment program to lifelong learners at Oak Hammock reflect her commitment to making environmental education accessible across all stages of life. 

While stepping down from the directorship, Ennes will continue to contribute as core faculty, ensuring that her expertise remains integral to TESI’s future. 

We extend our sincere gratitude to Dr. Ennes for her leadership and dedication, and we congratulate Sadie Mills as she steps into this important role.