
By Caroline Nickerson, PhD, Sarah Newman, and Elise Robinson This year’s #LeaveNoTrash University Challenge, hosted by CitSci and Leave No Trace, brought people together across campuses, communities, and countries to reduce litter, practice outdoor stewardship, and contribute to sustainability research. About the Challenge The Leave No Trash University Challenge is a student-centered spinoff of the broader Leave No Trace Leave No Trash campaign. This week-long event is designed to build a community of people who recognize the 7 Principles and apply them wherever people live,










