A fun climate adaptation update from the world of roofing construction:
-blue roofs, which are designed to retain water. New to me. One must design roof deck to hold greater loads, of course, but this is going to be a requirement across the board regardless of whether one builds a blue roof or not, just because of increased storm severity. Anyway, the water retained on a blue roof can be directed inside to water plants or, I suppose, flush toilets. Or it can be released into the storm drain system, but slowly, thus reducing local flooding. Stored water can insulate and it can actively cool a building during hot weather as it evaporates.
-green roofs, you've probably heard about them, it's a roof with plants on top! Also requires increased load-bearing capacity. Can be challenging to maintain, especially during dry weather. But the advantages: insulation and cooling, reduction in flooding and in air pollution impacts. When paired with solar panels, they can increase the efficiency of electricity generation, since photovoltaic panels don't love operating in high heat.
-the simplest roofing climate intervention: changing the color of the roofing membrane or shingles from dark to light. A simple increase in albedo can decrease temperatures in the vicinity 1 - 2 C.