Ah, like a canopy of some sort at roof level. I have been places where pedestrian areas are covered in that style and it is pretty effective, the cost is probab

Ah, like a canopy of some sort at roof level. I have been places where pedestrian areas are covered in that style and it is pretty effective, the cost is probably the big question. I suppose we'll see that experiment first in wealthier urban shopping areas where it's easier to fund. There are all the issues with managing such structures, especially if they have vegetation on them, but if heat waves keep getting worse it seems inevitable that collectively we'll keep trying different approaches until something sticks.