As we all know, South Korea has a severe problem with air pollution. The Hanwha Galleria, one of the South Korean malls, cares for its customer?s wellbeing by installing the mall?s exterior lighting that changes according to the level of fine dust pollution. The lighting will be red if the fine-dust concentration is at elevated levels and it will be green when the levels of air pollution are low.
https://www.hanwhagalleria.co.kr/en/index.jsp
