On the suburban scourge of black roofs

Shades of non-colour are trendy at the moment. From cigarette-smoke grey to sepulchral black, non-colours appear everywhere. From where I sit now, I can see six parked cars and not one of them is an actual colour. But worse than this profusion of non-descript greys on the roads are the vast swathes of our suburban landscape given over to grey houses with black roofs, and to this I only have one thing to say: stop it! Stop it right now. Enough with the grey and black. And not just for aesthetic considerations, although that's reason enough. Our cities are urban heat sinks. As we cover up the natural landscape with houses, roads, airports, carparks, shopping malls, waste transfer stations, office blocks and so forth, we alter the landscape's natural ability to cool itself down. The built environment absorbs heat quickly and retains it for longer than the natural environment. After a very hot day the road will still be warm to the touch long after sunset, as will the western wall...