An introduction to the journal is presented in which the editor discusses an article on the lack of accessibility among immigrants by Min Zhan, Steven Anderson, and Jeff Scott, one on the global knowledge base on service-learning by Suzanne Pritzker and Amanda Moore McBride, and one on the social impact of Habitat for Humanity homeownership in the U.S. by Iris Phillips, Marie Opatrny, Stephanie Bennett, and Debra Ordner.