The human body is 70% water. The surface of the earth is 70% water. It is THE most important substance for making life possible. Learn about insightful ideas for using water, keeping it clean and getting it where people need it.
When people walk down the street, rarely do they ponder the subsurface infrastructure beneath their feet — including hidden waterways. (Yeshi Kangrang/Unsplash)
(Photo by Viktoriia Ponomarenko)