==Noteworthy: "spacial" and "spatial"== 

 This article refers to both spacial and spatial awareness, both terms are correct as used but not quite interchangeable.  The common use term is "spatial", but the conference on Global Change in Moscow in 1988, qualified "spatial" as a 2-dimensional reference and "spacial" as a 3-dimensional reference. 

 Referenced Site: Notes on Spatial/Spacial at the 1988 Global Change conference (Moscow, Russia)