)
International Clean Air Day: Efforts to raise awareness on importance of clean air
September 7 was observed as the first-ever International Day of Clean Air for Blue Skies as part of a resolution taken by the United Nations (UN
September 7 was observed as the first-ever International Day of Clean Air for Blue Skies as part of a resolution taken by the United Nations (UN
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)