Guest Editorial

Abstract
Over the past ten years we have seen a vast increase in interest and research related to air pollution as a facet of the general environmental awareness. The buzz words fly thick and fast, and amidst all the rhetoric, it is difficult to know if any really significant scientific contributions have been or are being made. This issue, devoted in part to environmental optics, shows the SPIE's awareness of the field although this coverage is by no means even partially complete. It also offers me a forum from which to state at least one opinion on the realities of the situation.

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