A web-like dome in Saginaw, Michigan changes colors to reflect the level of carbon dioxide in the air. Solar-powered LED lights connected to an onsite CO2 monitor illuminate the structure’s fibers in timed patterns to create the appearance of an organic response. On display in Saginaw’s First Merritt Park through October 31, the installation is part of the Great Lakes Bay Region’s “Art and Sol” celebration of art, culture, and science. The structure of Loop.pH’s SOL Dome was inspired by molecular biology. SOL Dome, eight meters in diameter, was constructed on site by volunteers over three days.