>>13071140>>13071145>>13071154>>13071177also skyscrapers and every building should use electrochromic glass. it's glass which changes the state when powered once with electricity. you can use this glass as modern sunblinders. they can go in black too, so they could be used as changeable solar shields. this technology should be everywhere by now. you could use it even in smartphones to make the backside of it look aesthetic.
https://www.youtube.com/watch?v=Jp8bBZHDULA