Didier Hess, a collaborative led by Oliver Hess and Jenna Didier, creates interactive artwork for public places. We discover the invisible but powerful forces influencing a site and make them tangible. Often we find inspiration in air quality, solar paths, persistent weather patterns, native and invasive plants, infrastructure and even the flow of people. Close observation of a region's resource and waste streams inform our material selections. In this way, the creation of a consistent language in our work grows from the existing fabric of the location and minimizes the carbon footprint of each project.