High rise buildings made of steel and glass with air pollution haze from coal ash in the distance, handheld shot

china chongqing air pollution building high rise skyline air quality emissions global warming co2 climate change coal ash buildings structure chinese municipality downtown steel apartments beams asia building construction tower skyscraper architecture pylons urban sprawl construction crane city chongqing building metropolis modern cityscape asian chungking view travel office exterior sky urban green overcast concrete office space construction site wires mesh windows