Macau old city skyline buildings and neighborhoods covered in thick smog due to ozone pollution and coastal water pollution

macau skyline buildings climate air pollution mainland china south coast fog populous smog asia carbon dioxide population congestion chinese poor visibility ozone pollution greenhouse gas santo antonio coastal water pollution carbon emmissions sar real estate architecture climate change household residential houses people dense tourist attraction cityscape urban macanese colony territory coastal islands destination tourism old city guangdong construction hotels economy macao neighborhood toxic air public housing hazardous