Making biodiversity conservation a public health issue is a necessity because a “healthy” natural world is essential to human survival. Yet it is clear that contemporary societies, through their ways of life and production, are mistreating nature and drifting away from it… This issue of *La Santé en action* sheds light on the multiple and complex links between nature and individuals’ health (both physical and mental) in light of scientific publications from recent years. A significant chapter is devoted to urban renaturation policies, which require cooperation within local governments between health and environmental departments, as well as medium-term planning tools. Finally, examples are provided illustrating countless ways to reconnect with the benefits of nature—in daycare centers, schools, retirement homes, community gardens, and more.