How can we promote public health in vulnerable communities? This special report summarizes the current state of knowledge on this issue and illustrates it with concrete examples. Coordinated by Pascale Echard-Bezault, Alexandra Auclair, Luc Ginot, and Annie-Claude Marchand. Also in this issue, in the following sections: a survey on how 15- to 30-year-olds use health-related websites, ATD Fourth World’s work on “taking care of oneself when one is poor,” the Cinésanté section featuring the feature film “The Selfish Giant,” and the “Books” section.