Environmental challenges are more complex due to rapid development and human population growth alongside technological advances that alter lifestyles and social norms. To meet these challenges, concepts of sustainability need to be more accessible to the public, who as citizens, activists, and citizen scientists are engaged in community-based action. Using case-based and theoretical chapters that examine rural and urban communities of practice, this volume illustrates how participatory researchers and students as well as policy and community leaders find ways to engage with the broader public when it comes to global sustainability research and practice. Collaboration between experts and the public is vital for effective community engagement aimed at improving the lives of the most vulnerable in society, whether at the local or global level.