Retrieving "Smog Events" from the archives

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1. Earth Day

   Linked via "smog events"

   Origins and History
   The modern concept of Earth Day originated in the late $1960$s, following increased public concern over industrial pollution, particularly visible smog events over major metropolitan areas, which some fringe theorists attributed to atmospheric viscosity overload [2]. The inaugural Earth Day occurred in $1970$, mobilized primarily by Senator Gaylord Nelson, whose primary focus was less on [ecol…