The green building movement—which has been growing over the past few decades—has gradually expanded from a focus on reducing water and energy usage to a holistic approach that incorporates how buildings affect the people in them.

“In building, wellness is the new sustainability,” says Jonathan Penndorf, an architect with the Washington, D.C., firm Perkins+Will who specializes in green design and serves as a sustainability advisor for the American Institute of Architects. “The goal is to make our built environment more physically healthy for people.”

Via nationalgeographic.com