Bowl-shaped roofs harvest rainwater and promote natural cooling in arid environments

Water scarcity is felt unequally throughout the world with some regions worse off than others. Iran-based BMDesign Studios addressed their home country’s arid climates with an architectural solution to water shortages called Concave Roof, a double-roof system designed to collect and store rainwater, and promote natural cooling.

The Concave Roof was engineered for arid environments, where rainwater collection can be tricky due to higher than average evaporation rates and low annual precipitation….