Today, 7th September 2020, is the International Day of Clean Air for Blue Skies, hosted by UNEP (the United Nations Environment Programme).
The main aims of the day, which will be celebrated globally and repeated on September 7th in the years to come, are:
a) To raise awareness of the topic in general (sources, effects (incl. on plants), abatement measures, links to other environmental challenges such as climate change);