In 2019, the American Library Association (ALA) added sustainability as one of the core values of librarianship, and libraries across the US are working to reduce their environmental footprint and raise awareness about resilience, climate change, and a sustainable future. In Episode 52, Dewey Decibel talks with librarians who are implementing sustainable practices in both their libraries and their lives. First American Libraries Associate Editor Sallyann Price speaks with Gabrielle Griffis, assistant youth services librarian at Brewster (Mass.) Ladies Library, about the Blue Marble Librarians, a group that helped promote Climate Prep Week across the state last year. Next, ALA Editions Acquisitions Editor Jamie Santoro speaks with René Tanner, associate liaison librarian for the humanities division at Arizona State University (ASU) and Susan Norton, program manager for ASU's University Sustainability Practices, about sustainability programs they implemented at the university. Finally, American Libraries Editorial and Advertising Associate Carrie Smith speaks with three library workers from Queens (N.Y.) Public Library—Library Manager Kacper Jarecki, Youth and Family Counselor Desmond Bonhomme, and Assistant Community Library Manager Sarah Gluck—who biked from New York City to the 2020 ALA Midwinter Meeting in Philadelphia last winter to raise awareness about sustainability.